Phosphine (PH3) reacts with borane (BH) as follows: PH3 + BH3 H3P-BH3 (a) Draw Lewis structures of the reactants and the product. (b) Do the orbital hybridizations of P and B change during this reaction? If so, how do they change? 6. Methyl isocyanate, CH3NCO, is an intermediate in the manufacture of many pesticides. In 1984, a leak from a manufacturing plant resulted in the death of more than 2000 people in Bhopal, India. (a) Draw the Lewis structure of methyl isocyanate. (b) What are the hybridizations of the N atom and the two C atoms in methyl isocyanate? (c) Sketch the molecular shape.