Which of the following is not a s-block element? (a) \( [\mathrm{Ar}] 4 \mathrm{~s}^{2} 3 \mathr...
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0Which of the following is not a s-block element?
(a) \( [\mathrm{Ar}] 4 \mathrm{~s}^{2} 3 \mathrm{~d}^{10} 4 \mathrm{p}^{6} 5 \mathrm{~s}^{1} \)
(b) \( 1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}^{1} \)
(c) \( [\mathrm{He}] 2 \mathrm{~s}^{2} 2 \mathrm{p}^{6} 3 \mathrm{~s}^{1} \)
(d) None of these
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