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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3ph165

In which of the following does Xe have exactly two lone pairs?

A $XeF X_{4}$
B $XeF X_{5} X^{-}$
C $XeF X_{3} X^{+}$
D $XeF X_{5} X^{+}$

Answer: A, B, C

XeF4:

8 - 4 = 4

electrons left, 2 lone pairs.

XeF X_{5} X^{-}

:

8 + 1 - 5 = 4

, 2 lone pairs.

XeF X_{3} X^{+}

:

8 - 1 - 3 = 4

, 2 lone pairs.

XeF X_{5} X^{+}

:

8 - 1 - 5 = 2

, only 1 lone pair.

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