Krypton (_{36}Kr) has the electronic configur | vedclass

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

Question

(D) The $37^{th}$ electron will enter the $5s$ subshell.According to the Aufbau principle,electrons fill orbitals in the order of increasing energy.Fo

Vedclass · Accepted Answer

$5s$

Vedclass · Answer

(D) The $37^{th}$ electron will enter the $5s$ subshell.According to the Aufbau principle,electrons fill orbitals in the order of increasing energy.For the $4p$ orbital,$n=4$ and $l=1$,so $(n+l) = 4+1 = 5$.For the $5s$ orbital,$n=5$ and $l=0$,so $(n+l) = 5+0 = 5$.When $(n+l)$ values are equal,the orbital with the lower value of $n$ is filled first. Since $4p$ has $n=4$ and $5s$ has $n=5$,$4p$ is filled before $5s$.Therefore,after the $4p^6$ configuration is complete,the next electron $(37^{th})$ enters the $5s$ orbital.

Krypton $(_{36}Kr)$ has the electronic configuration $[Ar] 4s^2 3d^{10} 4p^6$. The $37^{th}$ electron will go into which of the following subshells?

Similar Questions

Maximum number of electrons in a subshell with $l = 3$ and $n = 4$ is

Which of the following combinations of quantum numbers is allowed?

Which of the following sets of quantum numbers is not possible for an electron?

What is the total number of unpaired electrons present in the observed electronic configuration of $Cr$ $(Z=24)$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module