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Chemistry Question on Chemical bonding and molecular structure

In terms of polar character which one of the following orders is correct?

A

NH3<H2O<HF<H2SNH_3 < H_2O < HF < H_2S

B

HF<H2O<NH3<H2SHF < H_2O < NH_3 < H_2S

C

H2O<NH3<H2S<HFH_2O < NH_3 < H_2S < HF

D

H2S<NH3<H2O<HFH_2S < NH_3 < H_2O < HF

Answer

H2S<NH3<H2O<HFH_2S < NH_3 < H_2O < HF

Explanation

Solution

More be the electronegatively difference, more be the polar character, thus correct order is

H2S<NH3<H2O<HFH _{2} S < NH _{3}< H _{2} O < HF