The calculated magnetic moments (spin only value) for species [ FeCl 4]2-,[ Co ( C 2 O 4)3]3- and MnO 42- respectively are

Question

The calculated magnetic moments (spin only value) for species [ FeCl 4]2-,[ Co ( C 2 O 4)3]3- and MnO 42- respectively are (A) 5.82,0 and 0 BM (B) 4.90,0 and 1.73 BM (C) 5.92,4.90 and 0 BM (D) 4.90,0 and 2.83 BM

Tardigrade Admin · Accepted Answer

(i)[ FeCl 4]-2 ⇒

μ =√ n ( n +2) BM =√4(4+2) BM =√24 BM ⇒ 4.90 BM (ii) [ Co ( C 2 O 4)3]-3

μ=0 (iii) MnO 4-2 Mn +6 ⇒ [ Ar ] 3 d 1, μ=√ n ( n +2) BM =√1(1+2) BM =√3 BM ⇒ 1.73 BM

Q. The calculated magnetic moments (spin only value) for species $[F e C l_{4}]^{2 -}, [C o (C_{2} O_{4})_{3}]^{3 -}$ and $M n O_{4}^{2 -}$ respectively are

$5.82, 0$ and $0 BM$

$4.90, 0$ and $1.73 BM$

$5.92, 4.90$ and $0 BM$

$4.90, 0$ and $2.83 BM$

(i) $[F e C l_{4}]^{- 2} \Rightarrow$

$μ = n (n + 2) BM$

$= 4 (4 + 2) BM$

$= 24 BM \Rightarrow 4.90 BM$

(ii) $[C o (C_{2} O_{4})_{3}]^{- 3}$

$μ = 0$

(iii) $M n O_{4}^{- 2}$

$M n^{+ 6} \Rightarrow [A r] 3 d^{1}, μ = n (n + 2) BM$

$= 1 (1 + 2) BM$

$= 3 BM \Rightarrow 1.73 BM$

Q. The calculated magnetic moments (spin only value) for species [FeCl4​]2−,[Co(C2​O4​)3​]3− and MnO42−​ respectively are

5.82,0 and 0BM

4.90,0 and 1.73BM

5.92,4.90 and 0BM

4.90,0 and 2.83BM