Question : The correct electronic configuration of Cu is:
Option 1: [Ar]3 d9 4 s2
Option 2: [Kr]3 d9 s2
Option 3: [Kr]3 d10 s1
Option 4: [Ar]3 d10 4 s1
New: SSC CHSL tier 1 answer key 2024 out | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
Correct Answer: [Ar]3 d 10 4 s 1
Solution : The correct answer is [Ar]3 d 10 4 s 1
The correct electronic configuration of copper (Cu) is:
Cu:1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 3d 10
Copper has an atomic number of 29, and its electron configuration fills the subshells in a way that optimizes stability, leading to an anomalous configuration where one electron is in the 4s orbital instead of the expected 3d orbital.
Related Questions
Know More about
Staff Selection Commission Combined High ...
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Get Updates Brochure
Your Staff Selection Commission Combined Higher Secondary Level Exam brochure has been successfully mailed to your registered email id “”.
