KCET2013Chemistryd and f Block Elements
The electronic configuration of Cu ²⁺ ion is
Options
- A[ Ar ] 3 d⁸ 4 s¹
- B[ Ar ] 3 d⁹ 4 ~s ⁰
- C[ Ar ] 3 d⁷ 4 s²
- D[ Ar ] 3 d⁸ 4 s⁰
Correct answer
B. [ Ar ] 3 d⁹ 4 ~s ⁰
Step-by-step solution
Electronic configuration of copper and cupric ion aligned & Cu (Z=29)=1 s² 2 s² 2 p⁶ 3 s² 3 p⁶ 3 d¹⁰ 4 s¹ & Cu ²⁺ (cupric ion) =1 s² 2 s² 2 p⁶ 3 s² 3 p⁶ 3 d⁹ 4 s⁰ aligned or