Question

In which of the following molecule, the central atom is not $s{p}^{3}d$ hybridised?

• A. $PC{l}_5$
• B. $Cl{F}_3$
• C. $Se{F}_6$
• D. $Xe{F}_2$

Answer 1

The correct option is C $Se{F}_6$

The molecular geometry of $Se{F}_6$ is octahedral with symmetric charge distribution on the central atom.. The hybridization is $s{p}^3{d}^2$. Selenium has $6$ valence electrons and it thus, forms $6$ bonds with $6$ fluorine atoms. These $6$ bonds result in $s{p}^3{d}^2$ hybridization.