In ${SF}_{6}$ molecule

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bonds are non polar but molecule is polar

bonds are polar and molecule is also polar

bonds are non polar and molecule is non polar

bonds are polar but molecule is non polar

answer is A.

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Detailed Solution

Bond are polar due to difference in electronegativity but molecule is non polar because $μ = 0$ .

In ${SF}_{6}$ molecule $S - F$ bond is polar due to an electronegativity difference between sulfur and fluorine. But Sulfur hexafluoride is a non polar compound in nature because as per VESPER theory six fluorine atoms are arranged symmetrically with sulfur atoms such that $S - F$ bond gets cancel out making its dipole moment zero hence, SF₆ is nonpolar compound or molecule.

Hence, the correct option is option (A) bonds are polar but molecule is non polar.

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