In methane the central C atom is bonded to 4 H atoms forming 4 covalent bonds and adopts a tetrahedral geometry.
The valence electron configuration of C = 2s²2p²
H = 1s¹
In methane, one electron from the 2s orbital of C gets promoted to the 2p orbital creating 4 unpaired electrons. This mixing of the 2s-2p creates 4 sp3 hybrid orbitals each of which then bonds to the 1s orbital of H. Thus, in CH3, the C atom is sp3 hybridized.
This pattern of hybridization is also exhibited by CF2Cl2 in which the central C atom is spe3 hybridized and forms 4 covalent bonds: 2 C-F and 2 C-Cl
Ans: D) CF2Cl2
