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Q.

The sum of the number of lone pairs of electrons on each central atom in the following species including the lone pair on oxygen atom in water isTeBr62-,BrF2+,SNF3 and XeF3-(Atomic numbers: N = 7, F = 9, S = 16, Br = 35, Te = 52, Xe = 54)

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answer is 8.

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Detailed Solution

Number of electron pairs around the central atom=V+M±C2         ∴ Sum of number of lone pairs = 1 + 2 + 0 + 3 = 6, Now add 2 for the two lone pair of electrons present in water molecule.
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