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JEE Main levelSingle correct optionDifficulty 2 of 3cb007

In its Lewis structure, which of the following species has more than eight electrons around the central atom?

A\ce{SF6}
B\ce{NH4+}
C\ce{PCl3}
D\ce{CH4}

Answer: A

SF X_{6}

has six S-F bonds, so the sulfur atom is surrounded by 12 electrons.

PCl X_{3}

,

CH X_{4}

and

NH X_{4} X^{+}

have 8 electrons around the central atom.

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