Chemical Bonding

Question 1

Factors affecting bond strength/energy

Directly proportional to multiplicity
Inversely proportional to size

Answer 1

Exceptions

Second period
C-C>N-N>O-O>F-F

Halogens
Cl2>Br2>F2>I2

Question 2

Bond angle depends on

Answer 2

Inversely proportional to LP on central atom
Directly proportional to EN and size of surrounding atom

Question 3

Bond angle depends on

Answer 3

Inversely proportional to LP on central atom
Directly proportional to EN and size of surrounding atom

Question 4

Overlapping is directly proportional to

Answer 4

Closeness to nucleus

1s1s>2s2s>3s3s

1s1s>1s2s>2s3s

directional nature

2s2s>2s2s>2s2p

1s1s>2s2p>2s2s

Question 5

Formal charge

Answer 5

FC = valance e_ - ( no of bonds + electrons required for octet )

Question 6

Dipole moment (u)

SI unit. Cm
CGS. esucm
Debye
1debye = 1×10^-18 esu cm
= 3.34×10^-30 Cm

Answer 6

More the EN more is u
HF>HCl>HBr>HI

q.d

CCl>CF>CBr>CI