NEETChemistryChemical Bonding and Molecular Structure
Identify the correct statement(s) from the following a) Dipole moment of NH ₃ is more than NF ₃ b) SF ₄ is square planar c) SnCl ₄ is more covalent than SnCl ₂ d) l ₂ SO ₄ sulphur atom has expanded octet
Options
- Aa,b
- Bb,c,d
- Ca,c,d
- Da,b,c
Correct answer
C. a,c,d
Step-by-step solution
Dipole moment of ( NH ₃ ) is more than ( NF ₃ ) True ( ) ( NH ₃ ) and ( NF ₃ ) both have a pyramidal structure due to the lone pair on nitrogen. In ( NH ₃ ), the bond dipoles (( N - H ) ) and the lone pair dipole reinforce each other, leading to a higher dipole moment. In ( NF ₃ ), the highly electronegative fluorine atoms pull electron density away from nitrogen, opposing the lone pair dipole, resulting in a lower dipole moment. ( SF ₄ ) is square planar False ( ) ( SF ₄ ) has a seesaw shape due to the presence of