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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure1 Mark
Question
Account for the following. The experimentally determined $\text{N}-\text{F}$ bond length in $\mathrm{NF}_3$ is greater than the sum of the single covalent radii of N and F.
✓

Answer

This is because both N and F are small and hence, have high electron density. So, they repel the bond pairs thereby making the N-F bond length larger.

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