General electronic configuration of group 16 elements is
(a) ns²np³
(b) ns²np⁴
(c) ns²np²
(d) ns²np⁵
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4
General is ns²np⁴
You get it as its fourth group in p block
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In dinitrogen pentaoxide (N2O5) nitrogen shows covalency of 4 but oxidation state of +5.
Nitrogen has 5 electrons in its valence shell.
2s2 2p3.
Therefore if an atom with high electro negativity is to attack a nitrogen atom, it is more likely that the nitrogen forms a bond with the atom by donating electrons.
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