Chemistry-
General
Easy
Question
Ionisation energy in group I-A varies in the decreasing order as
- (a)
- (c)
The correct answer is: (a)
Due to the large size of group IA elements, the outermost electron is far from the nucleus and can easily be removed. their ionisation energies or ionisation potentials are relatively low. Li Na K Rb Cs
Ionisation potential (eV) 5.4 5.1 4.3 4.2 3.9
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