Basics

Question 1

Which of these molecule dont exist
i)ClF,ClF3,ClF5,ClF7
ii)IF7,ICl7

Answer 1

i)ClF7
ii)ICl7
also BrF7 does not exist

Question 2

Hypovalent species

Answer 2

F,Cl,Br,I,OH,H,NH2 except AlF3(ionic)

Question 3

Strength order(INA = z axis):
i)2Px +2Px,2Pz + 2Pz
ii)1s + 1s,2s + 2s, 3s + 3s, 4s + 4s

Answer 3

i)2Px +2Px<2Pz + 2Pz
ii)1s + 1s>2s+2s>3s + 3s>4s + 4s

Question 4

Strength order(INA = z axis):
i)2s + 2s, 2px + 2px, 2pz + 2s, 2py + 2py, 2pz + 2pz
ii)2px + 2px,2px+ 3px,2px + 3d,3d + 3d(pi bond),3px + 3px

Answer 4

i) 2pz+ 2pz> 2pz + 2s> 2s + 2s> 2px + 2px=2py + 2py
ii) 2px + 2px> 2px+3d> 2px+ 3px>3d + 3d>3px+3px

Question 5

Bond Energy Order
i)HF,HCl,HBr,HI
ii)O-O,S-S
iii)F-F,Cl-Cl
iv)C-C,N-N,O-O,F-F

Answer 5

i)HF>HCl>HBr>HI
ii)O-O<S-S
iii)F-F<Cl-Cl
iv) C-C<N-N<F-F<O-O

lp lp reulsion

Question 6

Why do P2 and S2 not exist at RT?

Answer 6

due to weak and ineffective 3pπ + 3pπ bonding

Question 7

sp3d3 and i)1 active,lp ii)1 inactive lp examples

Answer 7

i)XeF6,IF6-
ii)TeX6-2,SbX6-3
x =Cl,Br

Question 8

No hybridisation Molecules

Answer 8

PH3 H2O
AsH3 H2S
SbH3 H2Se

Answer 9

sp2 —>pπ,dπ,dπ
sp3,sp3d2,sp3d3–>dπ

Question 10

Number of
i)pπ + pπ
ii)dπ + pπ
in 1)SO2
2)XeOF2

Answer 10

1)i)1
ii)1
2)
i)0
ii)1