Which shows variable valency - Vidyadip

MCQ

Which shows variable valency

A
$s$ - block elements
B
$p$ - block elements
✓
$d$ - block elements
D
Radioactive elements

✓

Answer

Correct option: C.

$d$ - block elements

c
$d$-block elements have empty inner orbitals, the electrons are added to incomplete inner shells. Thus they show variable valencies.

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