Elements `A, B, C, D` and `E` have the following electronic configurations: A: `1s^(2) 2s^(2) 2p^(1)` B: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(1)` C: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(2)` D: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(5)` E: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2)` Which among these will belong to the same group in the periodic table?

Elements `A, B, C, D` and `E` have the following electronic configurat

1.	Elements `A, B, C, D` and `E` have the following electronic configurations: A: `1s^(2) 2s^(2) 2p^(1)` B: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(1)` C: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(2)` D: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(5)` E: `1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2)` Which among these will belong to the same group in the periodic table?
Answer» Out of these, elements `A` and `B` will belong to the same group of the periodic table because they have same outer electronic configuration, `ns^(2) np^(1)`.

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