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Which of the ...

Question

Which of the following pairs have same EAN value?

[N i (C O)_{4}], [F e (C N)_{6}]^{4 -}

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[N i (e n)_{2}], [F e (H_{2} O)_{6}]^{2 +}

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[C o (C N)_{6}]^{3 -}, [F e (C N)_{6}]^{4 -}

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All the abvoe

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Solution

The correct option is C All the abvoe
All of the pairs have same EAN value.
(A) $[N i C O_{4}] E A N = Z - X + Y = 28 - 0 + 8 = 36$
$[F e C N_{6}]^{4 -} E A N = Z - X + Y = 26 - 2 + 12 = 36$
(B) $[N i e n_{2}] E A N = Z - X + Y = 28 - 0 + 8 = 36$
$[F e H_{2} O_{6}]^{2 +} E A N = Z - X + Y = 26 - 2 + 12 = 36$
(C) $[C o C N_{6}]^{3 -} E A N = Z - X + Y = 27 - 3 + 12 = 36$
$[F e C N_{6}]^{4 -} E A N = Z - X + Y = 26 - 2 + 12 = 36$

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