MCQ
Alkaline earth (group 2 or IIA elements) differ from group 12 (or IIB) elements in the electronic configuration of their:
- AAnitipenultimate shell
- BInnermost shell
- COutermost shell
- DPenultimate shell
✓
Answer
- Penultimate shell
Explanation:
Electronic configuration Alkaline earth (group 2 or IIA elements) is ns2
Electronic configuration group 12 (or IIB) elements is ns2,(n−1)d10,
so these twogroups differ in their electronic configaration of penultimate shell.
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