Question

Is atomic number of cr is 24 calculate the magnetic moment of cr 2 +

Answer 1

Answer : The magnetic moment is, 4.89 BM

Solution :

The metal is, chromium (Cr) with atomic number 24.

The electronic configuration of Cr is, $1s^22s^22p^63s^23p^64s^13d^5$

Now we have to calculate the magnetic moment of $Cr^{2+}$.

The electronic configuration of $Cr^{2+}$ is, $1s^22s^22p^63s^23p^64s^13d^3$

The number of unpaired electrons in $Cr^{2+}$ = 4

Formula used for magnetic moment :

$\mu=\sqrt{n(n+2)}$

where,

$\mu$ = magnetic moment

n = number of unpaired electrons

Now put all the given values in the above formula, we get the magnetic moment.

$\mu=\sqrt{4(4+2)}=4.89BM$

Therefore, the magnetic moment is, 4.89 BM

Answer 2

Answer : The magnetic moment is, 4.89 BM

Solution :

The metal is, chromium (Cr) with atomic number 24.

The electronic configuration of Cr is, 1s^22s^22p^63s^23p^64s^13d^51s22s22p63s23p64s13d5

Now we have to calculate the magnetic moment of Cr^{2+}Cr2+ .

The electronic configuration of Cr^{2+}Cr2+ is, 1s^22s^22p^63s^23p^64s^13d^31s22s22p63s23p64s13d3

The number of unpaired electrons in Cr^{2+}Cr2+ = 4

Formula used for magnetic moment :

\mu=\sqrt{n(n+2)}μ=n(n+2)

where,

\muμ = magnetic moment

n = number of unpaired electrons

Now put all the given values in the above formula, we get the magnetic moment.

\mu=\sqrt{4(4+2)}=4.89BMμ=4(4+2)=4.89BM

Therefore, the magnetic moment is, 4.89 BM