1(xii)
Identify the ion that contains one lone pair of electrons.
- (a)OH-1
- (b)H3O+
- (c)NH4+
- (d)H+
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H3O+
Reason — A pair of electrons that is not shared in bond formation is called a lone pair of electrons. H3O+ has one lone pair of electrons. OH1- has three lone pairs, whereas NH4+ and H+ have no lone pairs of electrons.