Which is a polar molecule- C5H10 C3H6 HF Br2 C5H10 C3H6.docx

Which is a polar molecule?
C 5 H 10
C 3 H 6
HF
Br 2
Solution
H-F is a polar molecule because there is a huge polarity difference between H and F as H is an electropositive atom where as F is the most electronegative atom, when they combine together to form HF as a molecule a dipole moment is there which makes it polar.
Rest all the molecules are either diatomic where there is no net dipole moment or hydrocarbons which are almost non polar.
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1. Which is a polar molecule?
C 5 H 10
C 3 H 6
HF
Br 2

C 5 H 10

C 3 H 6

HF

Br 2

I 2

Solution
H-F is a polar molecule because there is a huge polarity difference between H and F as H is an
electropositive atom where as F is the most electronegative atom, when they combine together to
form HF as a molecule a dipole moment is there which makes it polar.
Rest all the molecules are either diatomic where there is no net dipole moment or hydrocarbons
which are almost non polar.