MCQ
The alkaline earth metals have smaller size than those of corresponding alkali metals. This is due to :
- AIncrease in ionisation enthalpy.
- BDecrease in nuclear charge.
- ✓Increase in nuclear charge.
- DIncrease in number of shells.
✓
Answer
Correct option: C.
Increase in nuclear charge.
Smaller size of alkaline earth metal is due to high value of nuclear charge, which increases along a period from left to right.
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