Question

explain this - Atomic radius goes on increasing down a gro.

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Answer 1

Answer:

as we move down the group effective nuclear charge decreases because the shell number increases

so atomic radii increases down the group

Answer 2

Answer:

The atomic radius goes on increasing down a group, as atomic size increases down the group. This is because new shells are being added as we go down the group. This increases the distance between the outermost electrons and the nucleus so that the atomic size increases in spite of the increase in nuclear charge.

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