The set of quantum numbers for the 19^{th} el | vedclass

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

Question

(A) The atomic number of chromium $(Cr)$ is $24$.Its electronic configuration is $[Ar] 3d^5 4s^1$.The order of filling electrons according to the Aufb

Vedclass · Accepted Answer

$n = 4, l = 0, m = 0, s = +1/2 	ext{ or } -1/2$

Vedclass · Answer

(A) The atomic number of chromium $(Cr)$ is $24$.Its electronic configuration is $[Ar] 3d^5 4s^1$.The order of filling electrons according to the Aufbau principle is $1s, 2s, 2p, 3s, 3p, 4s, 3d$.The first $18$ electrons fill the argon core $(1s^2 2s^2 2p^6 3s^2 3p^6)$.The $19^{th}$ electron enters the $4s$ orbital.For the $4s$ orbital,the principal quantum number $n = 4$ and the azimuthal quantum number $l = 0$.Since $l = 0$,the magnetic quantum number $m = 0$.The spin quantum number $s$ can be $+1/2$ or $-1/2$.

The set of quantum numbers for the $19^{th}$ electron in chromium $(Cr)$ is:

Similar Questions

Let $R$ be a reflexive relation on a finite set $A$ having $n$ elements,and let there be $m$ ordered pairs in $R$. Then

Identify the product $(A)$ of the following reaction: $C_2H_5-O-C_2H_5 + CO \xrightarrow[500 \ atm]{BF_3 / 150^{\circ}C} A$

Which organisms are primarily included as pests?

Let $C$ be the centroid of the triangle with vertices $(3, -1)$,$(1, 3)$,and $(2, 4)$. Let $P$ be the point of intersection of the lines $x + 3y - 1 = 0$ and $3x - y + 1 = 0$. Then the line passing through the points $C$ and $P$ also passes through the point

The equation of the parabola with focus $(0,0)$ and directrix $x+y=4$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module