NEET Chemical Bonding and Molecular Structure — Set 11

Question 1

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

Accepted Answer

$ \ce{N2} $ has a triple bond with a bond length of ~110 pm, shorter than $ \ce{C2H2} $ (120 pm) or $ \ce{CO} $ (113 pm in MO context) due to high bond order and small atomic size.

Question 2

Which molecule has an octahedral electron pair geometry?

Accepted Answer

In $ \ce{SF6} $, sulfur has six bonding pairs and no lone pairs, with $ sp^3d^2 $ hybridization, giving an octahedral electron pair geometry.

Question 3

Which molecule does not obey the octet rule due to an expanded octet?

Accepted Answer

In $ \ce{SF6} $, sulfur has 12 electrons around it, exceeding the octet due to the availability of d orbitals.

NEET Chemistry: Chemical Bonding and Molecular Structure — Practice Set 11

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

Q2. Which molecule has an octahedral electron pair geometry?

Q3. Which molecule does not obey the octet rule due to an expanded octet?

Q4. In which molecule does the central atom exhibit an incomplete octet?

Q5. Which species is diamagnetic and has a bond order of 1?

Q6. The bond angle in \( \ce{ClF3} \) is approximately:

Q7. The bond formed by the transfer of electrons from a metal to a non-metal is known as:

Q8. The number of pi bonds in \( \ce{C4H4} \) (cyclobutadiene) is:

Q9. Which molecule has a trigonal pyramidal shape?

Q10. Which species has a bond order of 2.5?