Question

How to identify group and period of a given element??

Answer it according to class 10

Appropriate answer will be marked as BRAINLIEST...

Answer 1

according class 10
science chapter PERIODIC CLARIFICATION OF ELEMENTS 5
periods can be classified according to number of shell if there are three shells then it's period will be three
and group can be classified as if the valency is more than three then 2 then group no. =no of valence electron+10
if it is having 1 or 2 valence electron then
group no. = no of valence electron
and the elements having 2 incomplete outer shell then
group no. = sum of electron of outer 2 shell -8



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Answer 2

periods are classified according to no of valence electron if there is 2valence electron it will be from second period