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  • Chemistry Mixed Test
  • Primary valency of iron in K4 [Fe (CN)6] is
Multiple choice

Primary valency of iron in K4 [Fe (CN)6] is

  1. 2

  2. 3

  3. 4

  4. 5

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A Correct answer
Explanation

In K4[Fe(CN)6], the primary valency corresponds to the oxidation state of the central metal ion. Since the total charge of the complex is 0 and CN is -1, Fe + 6(-1) = -4, so Fe = +2.

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