2

Question 1

The shape of a molecule is only determine by

Answer 1

Sigma bond + lp…and not by pi bond

Question 2

What is the shape of CO2 , SO2

Answer 2

A. Linear
B. Trigonalplaner

Question 3

How many lobes dz2 have

Answer 3

8

Question 4

D orbital pure or mixed me divide hote hai dono me 2 difference bto

Answer 4

Mixed has 2 conical nodes
Dz2 nucleus is more shielded

Question 5

Delta bond koin banana hai

Answer 5

Dxy,dx2-y2

Question 6

Carbon covalency
Phosphorus covalency

Answer 6

Carbon has 4 due to free excitation
Phosphorus covalency 3,5 dure to forced excitation

Question 7

S
P
D
Orbitals
Free,or forced excitation

Answer 7

S to p free excitation
S to d , p to d forced excitation

Question 8

Condition for excitation

Answer 8

Primary = vacent orbital present
Secondary = energy Gao b/w the orbital should be low

Question 9

Contraction theory

Answer 9

Periodic contraction = jab hum left to right jaate hai to valence she’ll ke orbital ke beech distance increases Hota jata hai [2s…2p]

Charge contraction = jab nucleus ka change increase Kake hai to valence she’ll me ns aur ND pass pass aane lagte hai

Question 10

Nitrogen and oxygen ki covalency

Answer 10

Nitrogen = normal 3 …but max 4 by forming coordination bond
Oxygen = normarmally 2 but maximum 3 donating lp by coordination bond

Question 11

SCI6 NOT EXISTED BECAUSE OF

Answer 11

Steric crowding

Question 12

Xef6 exist with covalency 6 while XeO4 covalency 8

Answer 12

Xef6 because of steric crowding

Question 13

Mixing of orbital by two types

Answer 13

Hybridization
MOT

Question 14

Hybridization types

Answer 14

Ideal = percentage of s,p equal in hybrid orbital
Non ideal = not equal

Question 15

Hybrid orbital not form pi bond
Analysis of hybridization

Answer 15

Orbital
Steric
Energetic

Question 16

Orbital analysis
i= –1/COS0
S%=COS0/COS0–1 X 100

Answer 16

BF3(120)=SP² IDEAL
NH3(107.5)=SP³.³³ NON IDEAL
BiH3(90)=INFINITI NOT HYBRIDIZED
CH4(109.5)= SP3
H2O(194)= SP3.9
PX3(104)= SP4.13
CO2(180)=SP¹
NO2(135)=SP1.414

Question 17

Steric analysis

Answer 17

Ch4 = easily hybridization ( ideal hybridization)
Nh3= lp not easily undergoes hybridization ( non ideal)
Ph3 = not undergoes hybridization because p orbital need not s character to increase bond angle

Question 18

Molecule not showing sp mixing

Answer 18

Central atom of large side ( 3rd period)
Side atom should small and less EN
Presence of lp

Question 19

PH4+ ,NH4+
IDEAL OR NON IDEAL

Answer 19

Ideal