Chemical bonding 2

Question 1

delta Hf in Born Habers cycle

Answer 1

delta Hf = SE + IE + BDE - EA - LE

or SE + IE + BDE + Egain -LE

Question 2

Pseudo noble gas config examples

Answer 2

Cu+, Ag+, Au+, Zn+,Cd+,Hg+

Question 3

Bond angle with inc in EN of CA

Answer 3

inc

Question 4

Bond angle with inc in EN of SA

Answer 4

dec

Question 5

NO2 hybridisation

Answer 5

sp2

Question 6

Bond angle NO2+, NO2, NO2-, NO3-

Answer 6

NO2+(sp) > NO2(sp2 with one lone e) > NO3-(sp2 with 0lp) > NO2-(sp2 with 1lp)

Question 7

H2O and ether which has greater bond angle

Answer 7

ether > H2O

even tho SA of ether is more EN, it has lesser BA due to sterric hinderance of ether grps