For the compounds CH3Cl, CH3Br, CH3I, and CH3F,
the correct order of increasing C-halogen bond length is :
CH3F < CH3Cl < CH3Br < CH3I
CH3F < CH3Br < CH3Cl < CH3I
CH3F < CH3I < CH3Br < CH3Cl
CH3Cl < CH3Br < CH3F < CH3I
On increasing size of atom bond length increases but bond strength decreases
Order of size = I > Br > Cl > F
Order of bond length CH3F < CH3Cl < CH3Br < CH3I
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