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Assign the position of the element havin...

Assign the position of the element having outer electronic configuration.
(a) `ns^(2) np^(4) for n = 3`

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`ns^(2) np^(4) " for " n=3`
`rarr 3s^(2) 3p^(4) rarr` element is sulphur
`rarr` Sulphur belongs to VIA group (Group-16) and `3^(rd)` period in periodic table.
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