Question

Which of the following statements is true about s-block elements?

• A. Metals are obtained by the electrolysis of fused chlorides.
• B. Only one type of valency, $+1$ for IA and $+2$ for IIA, is shown.
• C. Oxides are basic except $BeO$.
• D. All are correct.

Answer 1

Answer: (D)

All are correct.

$BeO$ is amphoteric, apart from this all oxides are basic.
As electronic configuration is $n{s}^1$ for IA so its valcency is $+1$ and $n{s}^2$ for IIA so its valcency is $+2$.
Generally, all metals are obtained by the electrolysis of fused chlorides like $Na$ from $NaCl$.