The number of species from the following in which the central atom uses sp 3 hybrid orbitals in its bonding is _________. NH 3 , SO 2 , SiO 2 , BeCl 2 , CO 2 , H 2 O , CH 4 , BF 3

Step-by-step solution

H 2 O has sp 3 hybridisation and angular shape due to 2 lone pair of electrons. NH 3 has sp 3 hybridised nitrogen atom and pyramidal shape due to 1 lone pair of electrons. SiO 2 has sp 3 hybridised atoms, it is a network solid and the shape is tetrahedral around each silicon atom. SO 2 has sp 2 hybridised sulphur atom and the shape is V-shaped due to 1 lone pair of electrons. BF 3 has sp 2 hybridised boron atom and the shape is trigonal planar. BeCl 2 → sp CO 2 → sp CH 4 → sp 3 Hence the answer is 4