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Which of the two ions from the list given below that have the geometry that is explained by the same hybridization of orbitals, NO2−, NO3−, NH2−, NH4+, SCN−?

1. NO2− and NO3−
2. NH4+ and NO3−
3. SCN− and NH2−
4. NO2− and NH2−

Correct answer: NO2− and NO3−

Solution

Both NO2− and NO3− have geometries explained by sp2 hybridization. NO2− has a bent shape, while NO3− has a trigonal planar shape, but both involve sp2 hybridized orbitals.

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