Which one of the following does not follow Si | vedclass

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(C) The $EAN$ (Effective Atomic Number) rule states that the total number of electrons around the central metal atom in a complex should be equal to t

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$[Ag(NH_3)_2]^{\oplus}$

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(C) The $EAN$ (Effective Atomic Number) rule states that the total number of electrons around the central metal atom in a complex should be equal to the atomic number of the next noble gas.$1$. For $Fe(CO)_5$: $EAN = 26 - 0 + 2 	imes 5 = 36$ (Follows $EAN$ rule).$2$. For $[Mn(CO)_5(C_2H_4)]^{\oplus}$: $Mn$ is in $+1$ oxidation state. $EAN = 25 - 1 + 2 	imes 5 + 2 = 36$ (Follows $EAN$ rule).$3$. For $[Ag(NH_3)_2]^{\oplus}$: $Ag$ is in $+1$ oxidation state. $EAN = 47 - 1 + 2 	imes 2 = 50$ (Does not follow $EAN$ rule,as $50 
eq 54$).$4$. For $[PtCl_2(NH_3)_4]^{+2}$: $Pt$ is in $+4$ oxidation state. $EAN = 78 - 4 + 2 	imes 6 = 86$ (Follows $EAN$ rule).

Which one of the following does not follow Sidgwick $EAN$ rule?

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