Question
Write a note on occurrence of group 1 and group 2 elements:
✓
Answer
i. Group 1 (alkali metals):
- Two elements of group 1 i.e., sodium and potassium are the sixth and seventh most abundant elements present in the earth’s crust.
- However, francium does not occur appreciably in nature because it is radioactive and has short half-life period.
- The elements magnesium and calcium are found abundantly in earth’s crust.
- Radium is radioactive and is not easy to find.
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