NEET Chemical Bonding and Molecular Structure — Set 2

Question 1

Which molecule has the shortest bond length among those with a double bond?

Accepted Answer

Among molecules with a double bond, $\ce{O2}$ has a bond length of ~121 pm, shorter than $\ce{C2H4}$ (~134 pm), $\ce{SO2}$ (~143 pm), or $\ce{NO2}$ (~124 pm), due to higher bond strength and smaller atomic radii.

Question 2

Which molecule violates the octet rule by having more than 8 electrons around the central atom and involves d-orbital hybridization?

Accepted Answer

In $ \ce{SF6} $, sulfur has 6 bonds (12 electrons) with $ sp^3d^2 $ hybridization, exceeding the octet using d-orbitals.

Question 3

Which molecule has a trigonal planar electron pair geometry but a bent molecular shape?

Accepted Answer

In $ \ce{SO2} $, sulfur has 3 electron domains (2 bonding, 1 lone pair), giving a trigonal planar electron geometry ($ sp^2 $), but a bent molecular shape.

NEET Chemistry: Chemical Bonding and Molecular Structure — Practice Set 2

Q1. Which molecule has the shortest bond length among those with a double bond?

Q2. Which molecule violates the octet rule by having more than 8 electrons around the central atom and involves d-orbital hybridization?

Q3. Which molecule has a trigonal planar electron pair geometry but a bent molecular shape?

Q4. The shape of \( \ce{XeF4} \) molecule is:

Q5. Which molecule exhibits \( sp^3 \) hybridization at its central atom?

Q6. Which of the following has a triple bond?

Q7. Which molecule contains a single bond with a bond length of approximately 154 pm?

Q8. The strongest type of bond in terms of bond dissociation energy is:

Q9. Which molecule has a square planar shape?

Q10. The bond order of \( \ce{H2} \) molecule according to molecular orbital theory is: