General electronic configuration of outermost and penultimate shell of an atom is \( (n-1) s^{2}...

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General electronic configuration of outermost and penultimate shell of an atom is \( (n-1) s^{2}(n-1) p^{6}(n-1) d^{x} n s^{2} \). If \( n=4 \) and \( x=5 \), the number of proton in the nucleus is:
(A) \( 25 \)
(B) \( 24 \)
(C) 25
(D) 30
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