Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 23

HARD

11th CBSE

IMPORTANT

Earn 100

Which of these shows the highest paramagnetism :(i) $N_{2}$ , (ii) ${N_{2}}^{+}$ , (iii) ${N_{2}}^{-}$ (iv) ${N_{2}}^{2 -}$ .

Important Questions on Chemical Bonding and Molecular Structure

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 24

What are the main points of similarity and difference between valence bond theory and molecular orbital theory?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Give reason for the following :

H_{2} O

has higher boiling point than

HF

.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Given reasons for Ice floats on the surface of water.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Given reason: Ethyl alcohol has higher boiling point (

351 K

) than ethylamine (

290 K

).

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Give reasons for the following:

{KHF}_{2}

exists but

{KHCl}_{2}

does not.

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>ADDITIONAL QUESTIONS>Q 25

Given reason for the following: Boiling point of

HCl

is less than

HF

as well as

HBr

.

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>Competition Focus>Q 1

It is believed that atoms combine with each other such that outermost shell acquires stable configuration of

8

electrons. If stability were attained with

6

electrons rather than

8

, what would be the formula of the stable fluoride ion?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 4 - Chemical Bonding and Molecular Structure>Competition Focus>Q 2

In which of the following compounds does the central atom obey the octet rule?