Which of the following follows the EAN rule? | vedclass

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

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All of these

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(D) The $EAN$ (Effective Atomic Number) rule states that the total number of electrons around the central metal atom in a complex is equal to the atomic number of the next noble gas.For $[Fe(CO)_5]$: $Z = 26$,$O.S. = 0$,$CN = 5$. $EAN = 26 - 0 + (5 	imes 2) = 36$ (Krypton).For $[Ni(CO)_4]$: $Z = 28$,$O.S. = 0$,$CN = 4$. $EAN = 28 - 0 + (4 	imes 2) = 36$ (Krypton).For $K_4[Fe(CN)_6]$: $Z = 26$,$O.S. = +2$,$CN = 6$. $EAN = 26 - 2 + (6 	imes 2) = 36$ (Krypton).Since all complexes follow the $EAN$ rule,the correct option is $D$.

Which of the following follows the $EAN$ rule?

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