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Give reason : i) Element in a group...

Give reason :
i) Element in a group have similar chemical properties.
ii) Elements of groups I form ions with a charge of + 1.

Text Solution

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i) Elements in a group have same number of valence electrons and same valency therefore have similar chemical properties.
ii) It is because elements of group 1 lose one electron to acquire +1 charge and become stable.
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