Question

Assertion (A): Hydrogen is placed in group I.

Reason (R): Hydrogen can gain an electron to achieve noble gas configuration.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true but R is not the correct explanation of A.

Explanation:

Hydrogen is placed in group 1 and can gain an electron to attain a helium-like configuration, so both statements are true. Its group 1 placement is associated with its single valence electron and ability to lose it, not with gaining an electron.