JEE Advanced2016Chemistryp Block Elements (Group 13 & 14)Actual
The crystalline form of borax has
Options
- ATetra nuclear B 4 O 5 O H 4 2 - unit
- BAll boron atoms in the same plane
- CEqual number of s p 2 and s p 3 hybridized boron atoms
- DOne terminal hydroxide per boron atom
Correct answer
A. Tetra nuclear B 4 O 5 O H 4 2 - unit
Step-by-step solution
(A) Having B 4 O 5 O H 4 2 - tetra nuclear (boron) unit. (B) All boron atoms not in same plane. (C) Two boron are s p 2 hybridised and two boron are s p 3 hybridised. (D) One terminal hydroxide per boron atom is present.