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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Isobars are identical in chemical properties.
Reason : Isobars have same atomic number.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Both assertion and reason are incorrect.
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Direction: In the following questions, a statement of assertion (A) is...
Isobars are not identical in chemical properties because they have same mass number and different atomic numbers.
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Direction: In the following questions, a statement of assertion (A) is...
Assertion: Isobars are identical in chemical properties.
Reason: Isobars have the same atomic number.
The correct answer is option D, which states that both the assertion and reason are incorrect.
Explanation:
To understand why the assertion and reason are incorrect, let's first define what isobars are and what atomic number represents.
Isobars: Isobars are atoms of different elements that have the same mass number but different atomic numbers. In other words, isobars have the same total number of nucleons (protons + neutrons) but different numbers of protons.
Atomic number: Atomic number represents the number of protons in the nucleus of an atom. It determines the chemical properties of an atom and its position in the periodic table.
Now, let's analyze the assertion and reason given in the question.
Assertion: Isobars are identical in chemical properties.
This assertion is incorrect. Isobars, despite having the same mass number, have different atomic numbers, which means they have different numbers of protons. Since the number of protons determines the chemical properties of an atom, isobars cannot have identical chemical properties.
Reason: Isobars have the same atomic number.
This reason is also incorrect. Isobars do not have the same atomic number. As mentioned earlier, isobars have the same mass number but different atomic numbers. The atomic number is specific to each element and distinguishes one element from another.
Therefore, the correct answer is option D - both the assertion and reason are incorrect. Isobars do not have identical chemical properties because they have different atomic numbers.
Reason: Isobars have the same atomic number.
The correct answer is option D, which states that both the assertion and reason are incorrect.
Explanation:
To understand why the assertion and reason are incorrect, let's first define what isobars are and what atomic number represents.
Isobars: Isobars are atoms of different elements that have the same mass number but different atomic numbers. In other words, isobars have the same total number of nucleons (protons + neutrons) but different numbers of protons.
Atomic number: Atomic number represents the number of protons in the nucleus of an atom. It determines the chemical properties of an atom and its position in the periodic table.
Now, let's analyze the assertion and reason given in the question.
Assertion: Isobars are identical in chemical properties.
This assertion is incorrect. Isobars, despite having the same mass number, have different atomic numbers, which means they have different numbers of protons. Since the number of protons determines the chemical properties of an atom, isobars cannot have identical chemical properties.
Reason: Isobars have the same atomic number.
This reason is also incorrect. Isobars do not have the same atomic number. As mentioned earlier, isobars have the same mass number but different atomic numbers. The atomic number is specific to each element and distinguishes one element from another.
Therefore, the correct answer is option D - both the assertion and reason are incorrect. Isobars do not have identical chemical properties because they have different atomic numbers.
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Community Answer
Direction: In the following questions, a statement of assertion (A) is...
The correct is D
because if you take sodium and magnesium are isobars atomic mass same but chemical reaction are not identical means different hoga reaction. reaction me electron moves one element to another element so In sodium number of electron 11 and in magnesium electron is 12 .
we know that
electron moves one element to another element in which electron moves remembers
so remember electron different hone se reaction change ho kr new element found.
I hope you understand
thanks for asking questions :)
because if you take sodium and magnesium are isobars atomic mass same but chemical reaction are not identical means different hoga reaction. reaction me electron moves one element to another element so In sodium number of electron 11 and in magnesium electron is 12 .
we know that
electron moves one element to another element in which electron moves remembers
so remember electron different hone se reaction change ho kr new element found.
I hope you understand
thanks for asking questions :)
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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer?
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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer?.
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer?.
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ample number of questions to practice Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Isobars are identical in chemical properties.Reason : Isobars have same atomic number.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Both assertion and reason are incorrect.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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