why alkalis are placed in group 1?
All the Group 1 elements are very reactive . They must be stored under oil to keep air and water away from them. Group 1 elements form alkaline solutions when they react with water, which is why they are called alkali metals.
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Following are the reasons for placing alkali metals in group 1:
1.Similar chemical properties
2.All the metals have same valency,i.e, 1 hence placed in group 1
3.All the metals are reactive
- All the Group 1 elements are very reactive.
- They must be stored under oil to keep air and water away from them.
- These elements form alkaline solutions when they react with water