Question

which of the following molecules is not polar?
a) of₂
b) cf₄
c) ch₃cl
d) ch₂f₂

Explanation:

• For \(OF_2\): The molecule has a bent shape. Oxygen is more electronegative than fluorine. The bond dipoles do not cancel out, so it is polar.
• For \(CF_4\): It has a tetrahedral shape. The four \(C - F\) bonds are symmetrically arranged. The bond dipoles cancel each other out, making it non - polar.
• For \(CH_3Cl\): The molecule has a tetrahedral shape. Chlorine is more electronegative than carbon and hydrogen. The bond dipoles do not cancel, so it is polar.
• For \(CH_2F_2\): It has a tetrahedral shape. Fluorine is more electronegative than carbon and hydrogen. The bond dipoles do not cancel, so it is polar.

Answer:

B. \(CF_4\)