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प्रश्न
An element belongs to group 15 and 3rd period of the periodic table, its electronic configuration would be
विकल्प
1s2 2s2 2p4
1s2 2s2 2p3
1s2 2s2 2p6 3s2 3p2
1s2 2s2 2p6 3s2 3p3
उत्तर
1s2 2s2 2p6 3s2 3p3
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