In which of the following pairs, atomic size of second atom is larger than the first one? (a) \(...

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In which of the following pairs, atomic size of second atom is larger than the first one?
(a) \( \mathrm{Br}, \mathrm{Cl} \)
(b) \( \mathrm{Na}, \mathrm{Mg} \)
(c) \( \mathrm{Sr}, \mathrm{Ca} \)
(d) N, P
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