Nitrgen has electronic configuration 1s7 how?

please tell me name of theorem???? or:please tell me name of theorem????or:actually the electronic configuration is 1s 2s 2p and powers are 2,2,3....

please tell me name of theorem????

or:please tell me name of theorem????


or:actually the electronic configuration is 1s 2s 2p and powers are 2,2,3.... tat is 1s-2 , 2s-2 , 2p-3...and so the atomic no is only 7..........

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