Chemistry · 2015
NEET 2015 · 3 May · Code E · Q47
The species Ar, K^+ and Ca^2+ contain the same number of electrons. In which order do their radii increase?
The species Ar, $\displaystyle \mathrm{K}^{+}$ and $\displaystyle \mathrm{Ca}^{2+}$ contain the same number of electrons. In which order do their radii increase ?
Official answer
(3)
$\displaystyle \mathrm{Ca}^{2+}<\mathrm{K}^{+}<\mathrm{Ar}$
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