how many periods and groups in mendeleev periodic table?
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1
Answer:
In MENDELEEV PERIODIC TABLE they are 8 vertical columns known as Groups and 6 horizontal rows known as Periods.
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0
Answer:
Explanation:
MENDELEE HAD 7 PERIODS AND 8 GROUPS IN PERIODIC TABLE
EXCEPT GROUP 8 EVERY GROUP WAS DIVIDED INTO TWO SUB GROUPS
MARK BRAINLIEST!!!!!!!
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