First slide

13th group or boron group

Question

Boron nitride is isoelectronic with

Moderate

A

C₂
B

B₂
C

N₂
D

O₂

Solution

Boron nitride (BN),
Total no. of electrons - Electrons of B + Electrons of N
=5+7 =12
C₂, Total no. of electrons : 2 x Electrons of C
=2 x 6 = 12
Hence, BN and C₂, arc isoelectronic.

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