If the electronic configuration of a nitrogen | vedclass

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

Question

(C) The $1s$ orbital can accommodate a maximum of $2$ electrons according to Pauli's exclusion principle,which states that no two electrons in an atom

Vedclass · Accepted Answer

Pauli's exclusion principle

Vedclass · Answer

(C) The $1s$ orbital can accommodate a maximum of $2$ electrons according to Pauli's exclusion principle,which states that no two electrons in an atom can have the same set of all four quantum numbers. Since an orbital is defined by $n$,$l$,and $m_l$,the only way to distinguish two electrons in the same orbital is by their spin quantum number ($m_s = +1/2$ or $-1/2$). Therefore,a configuration like $1s^7$ is impossible as it attempts to place $7$ electrons in a single orbital.

If the electronic configuration of a nitrogen atom were $1s^7$,its energy would be lower than that of the ground state configuration $1s^2\,2s^2\,2p^3$ due to being closer to the nucleus. However,the $1s^7$ configuration is not observed because it violates which of the following rules?

Similar Questions

The maximum number of electrons in a $p$-orbital with $n=5, m=1$ is$-$

The correct ground state electronic configuration of chromium atom is

The electronic configuration of $Sc$ $(Z = 21)$ is:

The last orbit of argon would have how many electrons?

The set of quantum numbers $n = 3$,$l = 0$,$m = 0$,$s = -1/2$ belongs to the element

Vedclass Test Series

Exam Paper Generator

Online Exam Module