Consider the following molecules: PCl3 CO2 BrCl3 NCl3 How many lone pairs does each of the molecules have around the central atom?

Answer 1

PCl₃ = 26 valence electrons and P has 1 lone pair

CO₂ = 16 valence electrons and C has no lone pairs

BrCl₃ has 28 valence electrons and Br has 2 lone pairs (violates octet rule but it's ok)

NCl₃ has 26 valence electrons and N has 1 lone pair