Which among the following is the possible electronic configuration of an element ' $X$ ' having first and…

Which among the following is the possible electronic configuration of an element ' $X$ ' having first and second ionization enthalpy values as $520 \mathrm{~kJ}^{-1} \mathrm{~mol}^{-1}$ and $7300 \mathrm{~kJ} \cdot \mathrm{mol}^{-1}$ respectively
  1. $1 s^2 2 s^2 2 p^1$
  2. $1 s^2 2 s^2 2 p^3$
  3. $1 s^2 2 s^2 2 p^6 3 s^1$
  4. $1 s^2 2 s^2 2 p^6 3 s^2 3 p^2$

Solution

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Asked in: AP EAMCET 2020 (07 Oct Special)

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