Question

O Determine he arnat Cliaegh of all he atrms except hydroen 6, which of i r frules are kalp organic compourd: ppose a shucture for a nolecula that only had for Carin - atome as nedad) ④ Are thefollowing moleculen, resonance frmrof each other reamance torm.s and

Answer 1

1. Outline: The formal charge on an atom = N_A - N_M , where N_A = no. of electrons in the valence shell of free atom and NM = no. of electrons belonging to the atom in the molecule, N_M = N_LP - (1/2)N_BP ; N_LP and N_BP are the no. of electrons in the lone pairs and bonding pairs, respectively.

a) The formal charge on N in NH₃-BH₃ = 5 - (0 + (1/2)*8) = +1

The formal charge on B in NH₃-BH₃ = 3 - (0 + (1/2)*8) = -1

b) The formal charge on all the C's = 4 - (0 + (1/2)*8) = 0

The formal charge on N = 5 - (0 + (1/2)*8) = +1

The formal charge on O = 6- (6 + (1/2)*2) = -1