NEET Chemical Bonding and Molecular Structure — Set 20

Question 1

The shape of $ \ce{BrF3} $ molecule is:

Accepted Answer

In $ \ce{BrF3} $, bromine is $ sp^3d $ hybridized with 5 electron pairs (3 bonding, 2 lone), resulting in a T-shaped molecular geometry.

Question 2

Which molecule has all its electrons paired, making it diamagnetic?

Accepted Answer

For $ \ce{F2} $: $ (\sigma 1s)^2 (\sigma^* 1s)^2 (\sigma 2s)^2 (\sigma^* 2s)^2 (\sigma 2p_z)^2 (\pi 2p_x)^2 (\pi 2p_y)^2 (\pi^* 2p_x)^2 (\pi^* 2p_y)^2 $. All electrons are paired, so it’s diamagnetic.

Question 3

Which molecule has a coordinate bond where nitrogen donates a lone pair to a metal ion?

Accepted Answer

In $ \ce{[Cu(NH3)4]^2+} $, each $ \ce{NH3} $ donates a lone pair from nitrogen to $ \ce{Cu^2+} $, forming coordinate bonds.

NEET Chemistry: Chemical Bonding and Molecular Structure — Practice Set 20

Q1. The shape of \( \ce{BrF3} \) molecule is:

Q2. Which molecule has all its electrons paired, making it diamagnetic?

Q3. Which molecule has a coordinate bond where nitrogen donates a lone pair to a metal ion?

Q4. The number of lone pairs on xenon in \( \ce{XeF6} \) is:

Q5. Which molecule exhibits hydrogen bonding as its strongest intermolecular force?

Q6. Which molecule contains a triple bond and has a bond length shorter than that of \( \ce{O2} \) (121 pm)?

Q7. What is the total number of valence electrons in the \( \ce{CO} \) molecule?

Q8. The shape of \( \ce{TeF6} \) molecule is:

Q9. Which molecule has a bond angle closest to 109.5°?

Q10. Which species is paramagnetic and has a bond order of 2?