MCQ
With which of the following electronic configuration an atom has the lowest ionisation enthalpy ?
- A$1s^2 \ 2s^2 \ 2p^3$
- ✓$1s^2 \ 2s^2 \ 2p^5 \ 3s^1$
- C$1s^2\ 2s^2\ 2p^6$
- D$1s^2 \ 2s^2 \ 2p^5$
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$Fe _{2} N ( s )+\frac{3}{2} H _{2}( g ) \rightleftharpoons 2 Fe ( s )+ NH _{3}( g )$