Question

Which of the following statements is true about IIA group elements?

• A. All form nitrides in air.
• B. $Be$ is amphoteric.
• C. $M{H}_2$ is ionic salt-like hydride.
• D. All are correct.

Answer 1

The correct option is D All are correct.

$Be$ is amphoteric due to lower size and incomplete octet.

All form nitrides in air like $M{g}_3{N}_2$.

$M{H}_2$ is ionic salt-like hydride and forms, $M{H}_2\to M^{+2}+2H^{-}$.

Hence,option D is correct.