The correct order of the calculated spin-only magnetic moments of complexes $(A)$ to $(D)$ is:
$(A)$ $N i {(C O)}_{4}$
$(B)$ $[N i {(H_{2} O)}_{6}] C l_{2}$
$(C)$ $N a_{2} [N i {(C N)}_{4}]$
$(D)$ $P d C l_{2} {(P P h_{3})}_{2}$

Question

The correct order of the calculated spin-only magnetic moments of complexes A to D is: A N i C O 4 B N i H 2 O 6 C l 2 C N a 2 N i C N 4 D P d C l 2 P P h 3 2

TestHub · Accepted Answer

P d P P h 3 2 C l 2 , P d 2 + = 4 d 8 , M = 0 N i C O 4 , N i = 3 d 8 4 s 2 S F L , M = 0 N i C N 4 2 - N i 2 + = 3 d 8 S F L M = 0 N i H 2 O 6 2 + N i 2 + = 3 d 8 W F L t 2 g 2 , 2 , 2 , e g 1 , 1 So, unpaired electron is 2 , M = 8 B M

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