The effective atomic number (EAN) of iron in [Fe(CN) 6 ] 4- is:

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The effective atomic number (EAN) of iron in [Fe(CN)6]4- is:

Answer: 36.

A 34
B 36
C 35
D 38

Correct answer: B. 36

Explanation: Fe2+ has 24 electrons; six CN- donate 6 x 2 = 12 electrons. EAN = 24 + 12 = 36, equal to krypton.

The three common coordination geometries: octahedral (6 ligands), tetrahedral (4 ligands), and square planar (4 ligands in one plane).

Concept context

Study of compounds where a central metal atom is bonded to surrounding ligands. Covers nomenclature, types of isomerism, bonding theories (VBT, CFT), and applications in medicine, photography, and industry.

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The effective atomic number (EAN) of iron in [Fe(CN)<sub>6</sub>]<sup>4-</sup> is:

Concept context

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