Two resonance forms can be written for a bond between trivalent boron and an atom with a lone pair of electrons, (a) Formulate them for (i) (CH3)2BN(CH3)2; (ii) (CH3)2BOCH3; (iii) (CH3)2BF. (b) Using the guidelines in Section 1-5, determine which form in each pair of resonance forms is more important, (c) How do the electro negativity differences between N, O, and F affect the relative importance of the resonance forms in each case? (d) Predict the hybridization of N in (i) and O in (ii).