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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3ph218

Select the correct statement(s) about the oxides and oxyfluorides of xenon.

A $XeO X_{3}$ is trigonal pyramidal with one lone pair on Xe
B $XeO X_{4}$ is tetrahedral with $s p^{3}$ Xe and no lone pair
C $XeO X_{4}$ contains four sigma bonds from Xe to O
D $XeOF X_{4}$ is square planar

Answer: A, B, C

XeO X_{3}

has 3 sigma bonds and 1 lone pair, so it is pyramidal.

XeO X_{4}

has 4 sigma bonds and no lone pair on Xe, so it is

s p^{3}

and tetrahedral.

XeOF X_{4}

has 5 sigma bonds and 1 lone pair, so it is square pyramidal, not planar. Options 1, 2 and 3 are correct.

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