Duration: 8:45

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Four elements \( \mathrm{P}, \mathrm{Q}, \mathrm{R} \) and \( \mathrm{S} \) have ground state electronic configuration as
\( \mathrm{P} \rightarrow 1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6} 3 \mathrm{~s}^{2} 3 \mathrm{p}^{3} \)
\( \mathrm{Q} \rightarrow 1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6} 3 \mathrm{~s}^{2} 3 \mathrm{p}^{1} \)
\( \mathrm{R} \rightarrow 1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6} 3 \mathrm{~s}^{2} 3 \mathrm{p}^{6} 3 \mathrm{~d}^{10} 4 \mathrm{~s}^{2} 4 \mathrm{p}^{3} \)
\( \mathrm{S} \rightarrow 1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6} 3 \mathrm{~s}^{2} 3 \mathrm{p}^{6} 3 \mathrm{~d}^{10} 4 \mathrm{~s}^{2} 4 \hat{p}^{\prime} \)
Which of the following option(s) represent(s) the correct order ?
(A) Size of \( \mathrm{P} \) size of \( \mathrm{Q} \)
(B) Size of \( R \) size of \( S \)
(C) Size of \( P \) size of \( R \) (appreciable difference)
(D) All of these
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