Question

A molecule of the type $A{X}_5$ has square pyramidal geometry. Hence, number of lone pairs on $A$ is:

• A. $4$
• B. $3$
• C. $2$
• D. $1$

Answer 1

The correct option is D $1$

Square pyramidal is a molecular shape that results when there are five bonds and one lone pair on the central atom in the molecule. Bromine pentafluoride ($Br{F}_5$) has the geometry of a square pyramid