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Bonding in Some Homonuclear Diatomic Molecules MCQs

1. The number of electrons in bonding orbital and anti-bonding orbital of Lithium molecule are ______ and _______ respectively.

a) 4, 4

b) 2, 2

c) 2, 4

d) 4, 2

Answer:  4, 2

2. What is the electronic configuration of the carbon atom?

a) 1s²2s²2p²

b) σ1s²σ*1s²σ2s²σ*2s²π2p_x²π2p_y²

c) 1s²2s²2p¹

d) σ1s²σ*1s σ2s²π2p_x²π2p_y²

Answer:  1s²2s²2p²

3. O₂ is paramagnetic in nature.

a) True

b) False

Answer:  True

4. The electronic configurations of molecules change when the number of electrons is ________

a) 10

b) 20

c) 17

d) 14

Answer:  14

5. Which of the following is true regarding nitrogen molecule.

a) Diamagnetic

b) Paramagnetic

c) Bond order is 2

d) Total number of electrons in the molecule is 13

Answer:  Diamagnetic

6. H₂, N₂, O₂ and Li₂ are ______________

a) heteronuclear diatomic molecules

b) heteronuclear triatomic molecules

c) homonuclear diatomic molecules

d) homonuclear triatomic molecules

Answer:  homonuclear diatomic molecules

7. What is the total number of electrons in the Chlorine molecule?

a) 17

b) 34

c) 18

d) 16

Answer:  34

8. What is the electronic configuration of hydrogen molecule?

a) σ1s²

b) σ1s¹

c) σ1s

d) σ*1s

Answer:  σ1s²

9. What is the condition, for a molecule do not exist?

a) N_A = N_B

b) N_A > N_B

c) N_A < N_B

d) N_A >/< N_B

Answer:  N_A = N_B

10. Which of the following molecule doesn’t exist?

a) O₂

b) H₂

c) He₂

d) N₂

Answer:  H₂

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Categories: Chemical Bonding and Molecular Structure