JEE MAIN - Chemistry (2020 - 3rd September Evening Slot - No. 13)
The five successive ionization enthalpies of an
element are 800, 2427, 3658, 25024 and 32824
kJ mol–1. The number of valence electrons in
the element is :
2
3
4
5
Explanation
There is a sudden jump after 3rd I.E. due to
attainment of noble gas configuration.
So, the number of valence electrons in this element are 3.
So, the number of valence electrons in this element are 3.
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