Difference between groups and periods..

1.	Difference between groups and periods..
Answer» Vertical columns are called groups.There are 18 groupsHorizontal rows are called period.There are 7 periods Group fb aur whatsapp par banta hai aor period ladkiyon ko ata hai Groups are 18 in number but periods r 7 in number In the modern periodic table there are 18 group and 7 period

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