IMAT 2012 Q69 [Compounds]

Which one of the following is NOT the correct formula for a lithium compound?

A. Li_2S
B. LiCO_3
C. CH_3CO_2Li
D. LiHSO_4
E. Li_3N

Lithium’s valency is 1. Hence, it cannot form any compounds if it does not take the +1 ionic form.

The carbonate ion has a valency of 2, therefore B cannot be true.