Question

(n -1)d¹⁰ns² is the general electronic
configuration of
(a) Fe, Co, Ni (b) Cu, Ag, Au
(c) Zn, Cd, Hg (d) Se, Y, La

Answer 1

Answer:

D IS CORRECT ANSWER....

....I HOPE..........

Answer 2

(c) Zn, Cd, Hg

Explanation:

(n -1)d¹⁰ns² is the general electronic configuration of Zn, Cd, and Hg.

Electronic configuration of Zinc is [Ar] 3d¹⁰ 4s².

Electronic configuration of Cadmium is [Kr] 4d10 5s2.

Electronic configuration of Mercury is [Xe] 4f14 5d10 6s2.

Option C is the answer.