SAT Subject Test Chemistry,10 edition

(A) 2 p

(B) 3 s

(C) 3 d

(D) 4 s

(E) 3 p

9 . Which of the following correctly represents an excited state of scandium?

(A) 1 s^2   2 s^2   2 p^6   3 s^2   3 p^6   3 d^1   4 s^2

(B) 1 s^2   2 s^3   2 p^5   3 s^2   3 p^6   3 d^1   4 s^2

(C) 1 s^2   2 s^2   2 p^6   3 s^2   3 p^6   3 d^2   4 s^1

(D) 1 s^2   2 s^2   2 p^6   3 s^2   3 p^6   3 d^2   4 s^2

(E) 1 s^2   2 s^2   2 p^6   3 s^2   3 p^6   3 d^1   4 s^0