In which of the following molecules/ions BF_3,NO_2^(-), NH_2^(-) and H_2O, the central atom is sp^2 hybrized ?

In which of the following molecules/ions BF_3,NO_2^(-), NH_2^(-) and H

1.	In which of the following molecules/ions BF_3,NO_2^(-), NH_2^(-) and H_2O, the central atom is sp^2 hybrized ?
Answer» `NO_2^(-) and NH_2^(-)` `NH_2^(-) and H_2O` `NO_2^(-) and H_2O` `BF_3 and NO_2^(-)` ANSWER :D