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State Effective Atomic Number (EAN) Rule

State the effective atomic number (EAN) rule. Learn about Sidgwick's rule and coordination compounds for CBSE Class 12 and NEET Chemistry.

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Answers: The total amount of electrons present surrounding the central metal ion is defined as the EAN (Effective Atomic Number) in a complex. The EAN rule is also known as the “18-electron rule.” The total of electrons just on metal ions and the number of electrons signified by ligands can be determined using the formula.

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