Question

Unequal bond lengths are present in:
(1) NCI3,
(2) PC13,
(3) PCI5
(4) SO3​

Answer 1

(3) Option is your answer

PCl5

Answer 2

Phosphorus Pentachloride show unequal bond length

Explanation:

• $PCl_{5}$  has a $sp^{3}d$ hybridization and the structure it show is trigonal bipyramidal.

• Due to its structure, it form two kind of bond one is axial and other is equatorial.

• Two axial & four equatorial bond are formed in phosphorus pentachloride.

• Equatorial are shorter bond than axial bond.
• Sulphur trioxide has trigonal planar structure and phosphorus trichloride show trigonal pyramidal structure.

• option 3 is the answer of question