how many group and periods in modern periodic table ?
answers fast please...
i will mark as brainaliest answer....
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how many group and periods in modern periodic table ?
answers fast please...
i will mark as brainaliest answer....
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Answer:
There are 18 groups and 7 periods in the modern periodic table.
Hope it helps!! :/ thnkuh mate
Answer:
18 groups
7 periods..
rate my ans.wer...
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