Question

Inert pair effect occurs due to non participation of electron in which bonding orbital?

• A. $ns$
• B. $np$
• C. $nd$
• D. $nf$

Answer 1

The correct option is A $ns$

$ns$ electrons of heavier elements of group ${13}^{th}$ to ${15}^{th}$ of periodic table can’t participate in bonding due to the lanthanide contractions.