In which of the following does the central atom exhibit an oxidation state of $+ 2$ ?

K_{2} [N i (C N)_{4}]

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K_{4} [F e (C N)_{6}]

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{[F e {(C_{2} O_{4})}_{3}]}_{3}^{3 -}

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{[C u {(N H_{3})}_{4}]}_{4}^{2 +}

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Solution

The correct options are
A $K_{2} [N i (C N)_{4}]$
B $K_{4} [F e (C N)_{6}]$
D ${[C u {(N H_{3})}_{4}]}_{4}^{2 +}$
$K_{2} [N i (C N)_{4}] - x - 4 = - 2$ $\to x = 2$
$K_{4} [F e (C N)_{6}] - x - 6 = - 4$ $\to x = 2$
${[F e {(C_{2} O_{4})}_{3}]}_{3}^{3 -} - x - 6 = - 3$ $\to x = 3$
${[C u {(N H_{3})}_{4}]}_{4}^{2 +} - x + 4 = 2 \to x = 2$

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Similar questions

Q. What is the oxidation state of central atom in

[N i (C N)_{4}]^{2 -}

Q. Calculate oxidation number of central atom in

[K_{4} [F e (C N)_{6}]

Q. Which of the following is diamagnetic?
(I)

K_{4} [F e (C N)_{6}]

(II)

K_{3} [C r (C N)_{6}]

(III)

K_{3} [C o (C N)_{6}]

(IV)

K_{2} [N i (C N)_{4}]

$K_{2} [N i (C N)_{4}] K i n l i q . N H_{3} - ------- \to$ "X", regarding this reaction correct statement is/are

Which of the following statements is/are true for the complexes, $[F e (H_{2} O)_{6}]^{2 +}, [F e (C N)_{6}]^{3 -}, [F e (C_{2} O_{4})_{3}]^{3 -}$ and $[F e (C O)_{5}]$ ?

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In which of the following does the central atom exhibit an oxidation state of +2?

The correct options are A K2[Ni(CN)4] B K4[Fe(CN)6] D [Cu(NH3)4]2+K2[Ni(CN)4]−x−4=−2 →x=2K4[Fe(CN)6]−x−6=−4 →x=2[Fe(C2O4)3]3−−x−6=−3 →x=3[Cu(NH3)4]2+−x+4=2→x=2

In which of the following does the central atom exhibit an oxidation state of $+ 2$ ?