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ICSE Class 9 Chemistry Question 33 of 39

Atomic Structure and Chemical Bonding — Question 23

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23
Question

Question 2(v)

Assertion (A): Neon is a noble gas.

Reason (R): Neon is not very reactive due to its small size.

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
  3. A is true but R is false.
  4. A is false but R is true.
Answer

A is true but R is false.

Explanation — Neon is a noble gas with stable electronic configuration of 2, 8. Hence the assertion (A) is true.
Neon is stable and not reactive because of its electronic configuration which satisfies octet rule, not because of its small size. Hence the reason (R) is false.