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Find the number of molecule having two l...

Find the number of molecule having two lone `e^(-)` pairs, on central atom.
`I_(3)^(+), XeF_(2), XeF_(4), H_(2)O, NH_(2)^(-), H_(2)S, SO_(4)^(2-), NF_(3), NO_(2)^(-), XeOF_(2)`

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The correct Answer is:
5
`I_(3)^(+),XeF_(4),H_(2)O,NH_(2)^(-),H_(2)S`
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