MCQ
In comparison with alkali metals, the electron affinity of halogens is
- ✓Very high
- BVery low
- CNearly same
- DExactly same
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Above reaction is called

$(I)\,[Xe]\, 6s^1$ $(II)\,[Xe]\,4f^{14}\,5d^1\,6s^2$
$(III)\,[Ar]\,4s^2\,4p^5$ $(IV)\,[Ar]\,3d^7,\,4s^2$
Select the incorrect statement about these elements