What is the EAN of Cr in [Cr(SCN)_6]^{3-}? | vedclass

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Question

(B) The $EAN$ (Effective Atomic Number) is calculated using the formula: $EAN = Z - x + 2n$,where $Z$ is the atomic number of the central metal atom,$

Vedclass · Accepted Answer

$33$

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(B) The $EAN$ (Effective Atomic Number) is calculated using the formula: $EAN = Z - x + 2n$,where $Z$ is the atomic number of the central metal atom,$x$ is the oxidation state,and $n$ is the coordination number.For $[Cr(SCN)_6]^{3-}$:$Z$ for $Cr = 24$.Let the oxidation state of $Cr$ be $x$. Since $SCN^-$ has a charge of $-1$,$x + 6(-1) = -3$,so $x = +3$.The coordination number $n = 6$.$EAN = 24 - 3 + 2(6) = 21 + 12 = 33$.

What is the $EAN$ of $Cr$ in $[Cr(SCN)_6]^{3-}$?

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