Browse Questions

# Which of the following sets of bonds are correctly ordered from least to most polar?

A) C–Fe < C–H < C–O < C–F $\quad$ B) C–H < C–Fe < C–F < C–O$\quad$ C) C–H < C–Fe < C–O < C–F $\quad$ D) C–F < C–O < C–Fe < C–H

Answer: $C-H \lt C-Fe \lt C-O \lt C-F$
In the above given bonds, one element (Carbon) is the same.
We need to look at the electronegativity of other elements, which we see increases in the order $H \lt Fe \lt O \lt F$
$\Rightarrow$ polar character of the bond increases in the order $C-H \lt C-Fe \lt C-O \lt C-F$
edited Jul 24, 2014