Question

Shapes and Polarity of Polyatomic Molecules (Section 9.3) 9.35 What is the distinction between a bond dipole and a molecu lar dipole moment? 9.48 H

#79

Answer 1

(A) B2ion B2 9e = Electronic configuration- ols'o'ls202s2 a'2s2 n2p, ^2po Bond order 2 (no.of bonding electron -no.of antibonding electron) 6-4) =1/2

Addition of one more electron to B*ion means total number of electron is 10e Bond order (6-4) = 1 Thus bond order increases when electron is added to B*'ion

(B) Li2 ion Li,*ion = 5e Electronic configuration:- ols'o'ls'o2s -(3-2) Bond order =1/2

Addition of electron to Li,*ion means total number of electron is 6e 4-2) Bond order Thus bond order of Li,*ion increases as electron is added.

(C) N2 ion N ion 13e Electronic configuration:- olso'ls'o2s'o' 2s2 n2p, n2p o2p 0-4) Bond order 5/2

Addition of electron to N.*ion means total number of electron is 14e Bond order (10-4) =3 Thus bond order of N.*ionincreases as one electron is added to N,*ion

(D) Ne, ion 2+ 2+ Ne, ion 18e Electronic configuration 10-8) Bond order =1

Addition of one more electron means total number of electron is 19e 0-9) Bond order =1/2 Thus bond order decreases when one more electrons is added to Ne ion