What is the observed electronic configuration | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) $1$. The atomic number of $Cu$ is $29$.$2$. According to the Aufbau principle, the expected configuration is $[Ar] 3d^9 4s^2$.$3$. However, a comp

Vedclass · Accepted Answer

$[Ar] 3d^{10} 4s^1$

Vedclass · Answer

(B) $1$. The atomic number of $Cu$ is $29$.$2$. According to the Aufbau principle, the expected configuration is $[Ar] 3d^9 4s^2$.$3$. However, a completely filled $d$-subshell $(d^{10})$ provides extra stability due to symmetry and exchange energy.$4$. Therefore, one electron from the $4s$ orbital shifts to the $3d$ orbital, resulting in the observed configuration: $[Ar] 3d^{10} 4s^1$.

What is the observed electronic configuration of $Cu$?

Similar Questions

Which of the following is not true for transition metals?

Calculate the number of unpaired electrons in the following gaseous ions: $Mn^{3+}, Cr^{3+}, V^{3+}$ and $Ti^{3+}$. Which one of these is the most stable in aqueous solution?

Which of the following metal ions has a pink color?

Number of unpaired electrons in $Mn^{4+}$ is

Which elements of the first transition series have higher ionization enthalpy values than their neighboring elements?

Vedclass Test Series

Exam Paper Generator

Online Exam Module