Question

If AB₄ molecule is a polar molecule, a possible geometry of AB₄ is ______.

Options

• Square pyramidal

• Rectangular planar

• Square planar

• Tetrahedral

Answer 1

If AB₄ molecule is a polar molecule, a possible geometry of AB₄ is Square pyramidal.

Explanation:
For AB₄ molecule the possible geometry are:

S.No.	Geometry	H.O	b.p	1.p	Nature of molecule
1	Tetrahedral	sp3	4	0	Non-polar
2	Rectangular planar	sp3d	4	1	Non-polar
3	Square planar	sp3d2	4	2	Non-polar

Square pyramidal is polar because the structure is

The dipole moment of A is never cancelled by others.