Chapter 11, Problem 95SAE

In which of the following is the central atom sp hybridized? (a) ${\text{BeCl}}_{\text{2}}$ ; (b) ${\text{BCl}}_{\text{2}}$ ; (c) ${\text{CCl}}_{\text{2}}$ ; (d) ${\text{NCl}}_{\text{2}}$ ; (e) none of these.