Question

why does the number of shells increases as we go down the group for 1 marks​

Answer 1

Explanation:

Hi mate,

The number of shells increases as we go down to the group because all the elements in the periodic table are arranged according to their chemical properties,atomic mass,atomic number and valency.So,as we go down to the group the valency also increases and the number of shells will also increases.........

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Answer 2

Answer:

There are more electron shells between the outer shell and nucleus, which causes electron shielding.In an A-level exam you would get 3 marks for saying, "as you go down group 1 the number of electron shells increase, therefore the atomic radius increases