Question

Which of the following statement is incorrect? a- atomic size increases as we go down the group b- atomic size increases as we move from left to right in a period c- radius of cation is less than that of its atom d- radius of anion is more than that of its atom

Answer 1

" d- radius of anion is more than than its atom " is incorrect answer.Because atom wants to fill the valency shell completely.so no changes take place in the radius of anion.

Answer 2

b- atomic size increases as we move from left to right in a period
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left to right the  electrons are added to same shells , and the nucleus will have a greater pull on the electrons so size decreases