MCQ
Amongst the following elements, whose electronic configurations are given below, the one having the highest ionization enthalpy is :
- A$\ce{[Ne]3s^23p^1}$
- B$\ce{[Ne]3s^23p^3}$
- C$\ce{[Ne]3s^23p^2}$
- ✓$\ce{[Ar]3d^{10}4s^24p^3}$
✓
Answer
Correct option: D.
$\ce{[Ar]3d^{10}4s^24p^3}$
Have exactly half filled $p-$ orbitals but $(b)$ is smaller in size than Hence, $(b)$ has highest ionization enthalpy.
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