Only \(B_2H_6\) and \(BCl_3\) are \(e^–\)deficient among the given molecules.
So, the correct option is (C): 2.
In the following \(p\text{–}V\) diagram, the equation of state along the curved path is given by \[ (V-2)^2 = 4ap, \] where \(a\) is a constant. The total work done in the closed path is: 