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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: Members of noble gas family are very little reactive chemically.
Reason: Members of noble gas family have completely filled valence shells of their atoms.
Assertion: Members of noble gas family are very little reactive chemically.
Reason: Members of noble gas family have completely filled valence shells of their atoms.
- 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)Assertion (A) is false but reason (R) is true.
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Direction: In the following questions, a statement of assertion (A) is...
The correct option is A
Both assertion and reason are correct and the reason is the correct explanation of assertion.
Explanation for assertion:
Group 18 elements are called inert gases, as they do not react easily.
Explanation for reason statement:
- Noble gas elements have their duplet or octet complete, which means that they have completely filled valence shells.
- Due to this reason, they have very low electronegativity and very high Ionization Potential, hence they are then fairly unreactive and called inert gases.
Hence, A) Both assertion and reason are true, reason is the correct explanation of assertion.
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Direction: In the following questions, a statement of assertion (A) is...
Explanation:
Assertion (A): Members of noble gas family are very little reactive chemically.
Reason (R): Members of noble gas family have completely filled valence shells of their atoms.
The correct answer is option 'A', which states that both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
Explanation of Assertion:
- Noble gases are a group of elements in the periodic table that includes helium, neon, argon, krypton, xenon, and radon.
- These elements are known as noble gases because they were once believed to be completely inert or non-reactive due to their very low chemical reactivity.
- Noble gases have a stable electronic configuration, with a completely filled valence shell of electrons.
- The valence shell refers to the outermost electron shell of an atom, which is responsible for the atom's chemical behavior.
- In the case of noble gases, their valence shells are completely filled with electrons, making them stable and less likely to form chemical bonds with other elements.
Explanation of Reason:
- The reason provided in the question is that members of the noble gas family have completely filled valence shells of their atoms.
- This reason explains why noble gases are very little reactive chemically.
- The stability of noble gases is due to the fact that their valence shells are completely filled with electrons.
- Because their valence shells are already full, noble gases do not need to gain or lose electrons to achieve stability, unlike other elements.
- This makes them less likely to form chemical bonds with other elements and participate in chemical reactions.
Conclusion:
- The assertion and the reason are both true and related.
- The reason explains why members of the noble gas family are very little reactive chemically.
- The stability of noble gases is a result of their completely filled valence shells, which reduces their tendency to form chemical bonds with other elements.
Assertion (A): Members of noble gas family are very little reactive chemically.
Reason (R): Members of noble gas family have completely filled valence shells of their atoms.
The correct answer is option 'A', which states that both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
Explanation of Assertion:
- Noble gases are a group of elements in the periodic table that includes helium, neon, argon, krypton, xenon, and radon.
- These elements are known as noble gases because they were once believed to be completely inert or non-reactive due to their very low chemical reactivity.
- Noble gases have a stable electronic configuration, with a completely filled valence shell of electrons.
- The valence shell refers to the outermost electron shell of an atom, which is responsible for the atom's chemical behavior.
- In the case of noble gases, their valence shells are completely filled with electrons, making them stable and less likely to form chemical bonds with other elements.
Explanation of Reason:
- The reason provided in the question is that members of the noble gas family have completely filled valence shells of their atoms.
- This reason explains why noble gases are very little reactive chemically.
- The stability of noble gases is due to the fact that their valence shells are completely filled with electrons.
- Because their valence shells are already full, noble gases do not need to gain or lose electrons to achieve stability, unlike other elements.
- This makes them less likely to form chemical bonds with other elements and participate in chemical reactions.
Conclusion:
- The assertion and the reason are both true and related.
- The reason explains why members of the noble gas family are very little reactive chemically.
- The stability of noble gases is a result of their completely filled valence shells, which reduces their tendency to form chemical bonds with other elements.
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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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? for Class 9 2025 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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2025 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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. 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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? for Class 9 2025 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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2025 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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?.
Solutions 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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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Here you can find the meaning of Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer?, a detailed solution 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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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: Members of noble gas family are very little reactive chemically.Reason: Members of noble gas family have completely filled valence shells of their atoms.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)Assertion (A) is false but reason (R) is true.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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