Identify the element from the following havin | vedclass

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

Question

(C) Chromium $(Cr)$ has an atomic number of $24$. Its expected electronic configuration is $[Ar] 3d^4 4s^2$. However,due to the extra stability of hal

Vedclass · Accepted Answer

$Cr$

Vedclass · Answer

(C) Chromium $(Cr)$ has an atomic number of $24$. Its expected electronic configuration is $[Ar] 3d^4 4s^2$. However,due to the extra stability of half-filled $d$-orbitals,the observed electronic configuration is $[Ar] 3d^5 4s^1$. In this configuration,there are $5$ unpaired electrons in the $3d$ subshell and $1$ unpaired electron in the $4s$ orbital. Therefore,the total number of unpaired electrons is $5 + 1 = 6$.

Identify the element from the following having six unpaired electrons in its observed electronic configuration.

Similar Questions

Which set of quantum numbers is correct for the valence electron of $Na$?

The total number of orbitals associated with the principal quantum number $n = 5$ is

For a single electron system,the following graph is drawn for the radial distribution function $(RDF)$ versus radial distance. The correct statement regarding the graph is:

The number of radial nodes in a $2s$ orbital is equal to that in a ........ orbital.

Show the distribution of electrons in an oxygen atom (atomic number $8$) using an orbital diagram.

Vedclass Test Series

Exam Paper Generator

Online Exam Module