Magnetic moment of Cr(Z=24), Mn +(Z=25) and Fe 2+(Z=26) are x, y, z. They are in order

Question

Magnetic moment of Cr(Z=24), Mn +(Z=25) and Fe 2+(Z=26) are x, y, z. They are in order (A) x < y< z (B) x=y< z (C) z< x= y (D) x=y=z

Tardigrade Admin · Accepted Answer

Magnetic moment μ=√N(N+2) BM Where, N= unpaired electrons Cr(24)[ Ar ] 3 d5 4 s1 N=6, μ=√48 BM =x Mn + [ Ar ] 3 d5 4 s1 N=6, μ=√48 BM =y Fe 2+ [ Ar ] 3 d6 N=4, μ=√24 BM =z <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/32a3e4ae576d1a4a5652e0d04df7cbc0-.png" /> Thus, z< x=y

Q. Magnetic moment of $C r (Z = 24), M n^{+} (Z = 25)$ and $F e^{2 +} (Z = 26)$ are $x, y, z$ . They are in order

$x < y < z$

$x = y < z$

$z < x = y$

$x = y = z$

Magnetic moment $μ = N (N + 2)$ BM
Where, $N =$ unpaired electrons
$C r (24) [A r] 3 d^{5} 4 s^{1} N = 6, μ = 48 BM = x$
$M n^{+} [A r] 3 d^{5} 4 s^{1} N = 6, μ = 48 BM = y$
$F e^{2 +} [A r] 3 d^{6} N = 4, μ = 24 BM = z$

Thus, $z < x = y$

Q. Magnetic moment of Cr(Z=24),Mn+(Z=25) and Fe2+(Z=26) are x,y,z. They are in order

x<y<z

x=y<z

z<x=y

x=y=z