Question

Assertion (A): Hydrogen shows resemblance with alkali metals as well as halogens.
Reason (R): Hydrogen exists in atomic form only at high temperature.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is not a correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is B Both A and R are true but R is not a correct explanation of A

Hydrogen is having similarities with alkali metals and halogens in many properties because of only 1 valence electron.

Hydrogen exists in atomic form at high temperatures. At normal it exists as a diatomic molecule.

Both assertion and reason are true but the reason does not satisfy the assertion.
Option B is correct.