Electronic configurations of four elements A, B, C and D are given bel

1.	Electronic configurations of four elements A, B, C and D are given below
Answer» `1s^(2), 2S^(2), 2p^(6)` `1s^(2), 2s^(2), 2p^(4)` `1s^(2), 2s^(2), 2p^(6), 3S^(1)` `1s^(2), 2s^(2), 2p^(5)` Solution :`np^(5)` and `NS^(1)` elements possess a large tendency to accept the ELECTRON than fully and half-filled elements

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