Which of the following molecules is non-polar?
(i) $P b C I_{4}$
(ii) ${B F}_{3}$
(iii) $S n {C l}_{2}$
(iv) ${C S}_{2}$

(i), (ii), (iii)

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(i), (ii), (iii), (iv)

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(i), (ii), (iv)

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(II), (iii), (iv)

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Solution

The correct option is C (i), (ii), (iv)
Among the given molecules, $P b C I_{4}$ , $B F_{3}$ and $C S_{2}$ are non polar. A non polar bond arises when the electronegativity of the two atoms are almost equal. In non polar bond equal sharing of bond electrons will occur.
Therefore the correct option is C.

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