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1. ⇒ (MHT CET 2023 11th May Morning Shift )

Identify a molecule with incomplete octet from following.

A. ${SF}_{6}$

B. ${PCl}_{5}$

C. $LiCl$

D. $H_{2} {SO}_{4}$

Correct Option is (C)

$Li$ in $LiCl$ has less than eight electrons in its valence shell. It has only four electrons. Hence, it has an incomplete octet. Molecules like ${SF}_{6}, {PCl}_{5}, H_{2} {SO}_{4}$ have an expanded octet. They have more than eight electrons around the central atom.

2. ⇒ (MHT CET 2023 10th May Evening Shift )

What is the number of unpaired electrons in $NO$ molecule?

A. 0

B. 1

C. 2

D. 3

Correct Option is (B)

MHT CET 2023 10th May Evening Shift Chemistry - Chemical Bonding and Molecular Structure Question 7 English Explanation

No. of unpaired electrons = 1

⇒Chemical Bonding