1 point
Grouping elements based on
the number of shells are......
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Answer:
Elements are grouped according to their number of shells in periods.
Their are total 7 periods
7th period is always incomplete and has the most number of elements in it.
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Answer:
just a nonsense I asked answer and you said a rubbish . these peopt are just extra weight for earth . these people have no value .
Explanation:
such an idot.
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