Which of the following order of atomic/ionic radius is not correct ?
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a
I− > I > I+
b
Mg+2 >Na+> F−
c
P+5 < P+3
d
Li > Be > B
answer is B.
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Detailed Solution
(1) In case of same element, Anion > atom >cation(2) In case of positive ions of an element, as positive charge increases size decreases.(3) In case of negative ions of an element, as negative charge increases size increases.(4) In case of isoelectronic species , size decreases with increase in positive charge and size increases with increase in negative charge.