Which of the following molecules is polar?

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(C) molecule is polar if it has a non-zero net dipole moment. $IF_7$ has a pentagonal bipyramidal geometry with a net dipole moment of $0$. $SF_6$ has

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$PCl_3$

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(C) molecule is polar if it has a non-zero net dipole moment. $IF_7$ has a pentagonal bipyramidal geometry with a net dipole moment of $0$. $SF_6$ has an octahedral geometry with a net dipole moment of $0$. $PCl_5$ has a trigonal bipyramidal geometry with a net dipole moment of $0$. $PCl_3$ has a trigonal pyramidal geometry due to the presence of one lone pair on the phosphorus atom,which results in a non-zero net dipole moment. Therefore,$PCl_3$ is a polar molecule.

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