Question

(a) What is meant by a (a) group (b) periods in a periodic table ?

Answer 1

Answer:

it helps in learning of periodic table

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Answer 2

group in a periodic table is the verticle columns

the number of group in a periodic table are 18 and they are divided into A and B

period in a periodic table are the horizontal rows

the number of period are 7

I think this is the answer.......I hope it helps you