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Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)
Assertion (A): Ti4+ ion is colourless.
Reason (R): All valence electrons are unpaired in Ti4+ ion.
  • a)
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • b)
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • c)
    Assertion is correct statement but reason is wrong statement.
  • d)
    Assertion is wrong statement but reason is correct statement.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Read the passage given below and answer the following questions: In t...
Ti4+, No unpaired electrons.
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Read the passage given below and answer the following questions: In t...
Understanding the Assertion and Reason
The assertion and reason statements provided are related to the Ti4+ ion and its electronic configuration, which influences its color.
Assertion (A): Ti4+ ion is colourless.
- The Ti4+ ion has lost all four of its valence electrons (from the 3d and 4s orbitals).
- As a result, it has no unpaired electrons, which is a key factor in determining the color of transition metal ions.
Reason (R): All valence electrons are unpaired in Ti4+ ion.
- This statement is incorrect. In the Ti4+ ion, all electrons have been removed, leading to a completely empty d orbital.
- An unpaired electron is necessary for the absorption of light, which contributes to color; thus, if there are no unpaired electrons, the ion remains colorless.
Evaluation of the Statements
- Since the assertion is correct (Ti4+ is indeed colorless) and the reason is incorrect (not all valence electrons are unpaired in Ti4+), the correct answer is option "c": Assertion is correct, but the reason is wrong.
Conclusion
- The color of transition metal ions is significantly influenced by their electronic configurations.
- The presence of unpaired electrons typically indicates color, while a complete lack of unpaired electrons results in a colorless ion, as seen in the case of Ti4+.
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Read the passage given below and answer the following questions:The d block elements are the 40 elements contained in the four rows of ten columns (3-12) in the periodic table. As all the d block elements are metallic, the term d-block metals is synonymous. This set of d-block elements is also often identified as the transition metals, but sometimes the group 12 elements (zinc, cadmium, mercury) are excluded from the transition metals as the transition elements are defined as those with partly filled d or f shells in their compounds. Inclusion of the elements zinc, cadmium and mercury is necessary as some properties of the group 12 elements are appropriate logically to include with a discussion of transition metal chemistry. The term transition element or transition metal appeared to derive from early studies of periodicity such as the Mendeleev periodic table of the elements. His horizontal table of the elements was an attempt to group the elements together so that the chemistry of elements might be explained and predicted. In this table there are eight groups labeled I-VIII with each subdivided into A and B subgroups. Mendeleev recognized that certain properties of elements in Group VIII are related to those of some of the elements in Group VII and those at the start of the next row Group I. In that sense, these elements might be described as possessing properties transitional from one row of the table to the next.In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion (

Read the passage given below and answer the following questions:The d block elements are the 40 elements contained in the four rows of ten columns (3-12) in the periodic table. As all the d block elements are metallic, the term d-block metals is synonymous. This set of d-block elements is also often identified as the transition metals, but sometimes the group 12 elements (zinc, cadmium, mercury) are excluded from the transition metals as the transition elements are defined as those with partly filled d or f shells in their compounds. Inclusion of the elements zinc, cadmium and mercury is necessary as some properties of the group 12 elements are appropriate logically to include with a discussion of transition metal chemistry. The term transition element or transition metal appeared to derive from early studies of periodicity such as the Mendeleev periodic table of the elements. His horizontal table of the elements was an attempt to group the elements together so that the chemistry of elements might be explained and predicted. In this table there are eight groups labeled I-VIII with each subdivided into A and B subgroups. Mendeleev recognized that certain properties of elements in Group VIII are related to those of some of the elements in Group VII and those at the start of the next row Group I. In that sense, these elements might be described as possessing properties transitional from one row of the table to the next.In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion (

Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer?
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Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Read the passage given below and answer the following questions: In transition elements, generally, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. This is because the new electron enters a d orbital each time the nuclear charge increases by unity. But the radii of the third (5d) series are virtually the same as those of the corresponding members of the second series. This phenomenon is associated with the intervention of the 4f orbitals which must be filled before the 5d series of elements begin. The filling of 4f before 5d orbital results in a regular decrease in atomic radii called Lanthanoid contraction. In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.Following are the transition metal ions of 3d series: Ti4+, V2+, Mn3+, Cr3+ (Atomic number: Ti = 22, V = 23, Mn = 25, Cr = 24)Assertion (A): Ti4+ ion is colourless.Reason (R): All valence electrons are unpaired in Ti4+ ion.a)Assertion and reason both are correct statements and reason is correct explanation for assertion.b)Assertion and reason both are correct statements but reason is not correct explanation for assertion.c)Assertion is correct statement but reason is wrong statement.d)Assertion is wrong statement but reason is correct statement.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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