Oxidation state of 'Fe' in K3[Fe(CN)6] is:
Correct answer: B. +3
- A. +2
- B. +3
- C. -6
- D. -3
Explanation
K has a +1 charge, so K3 is +3. CN has a -1 charge, so (CN)6 is -6. So, +3 + -6 + x = 0 -3 + x = 0 x = +3 So, the oxidation state of 'Fe' in K3[Fe(CN)6] is +3.
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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