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Representations of Organic Compounds

Which of the ...

Question

Which of the 3d series of the transition metals exhibits the largest number of oxidation states and why?

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Solution

Mn (Z = 25) = 3d⁵ 4s²

Mn has the maximum number of unpaired electrons present in the d-subshell (5 electrons). Hence, Mn exhibits the largest number of oxidation states, ranging from +2 to +7.

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Q. Which of the following 3d-series transition metal exhibits the largest number of oxidation states?

Q. Which metal in the first series of transition metals exhibits

+ 1

oxidation state most frequently and why?

Q. (a) Which metal in the first transition series (

3 d

series) exhibits

+ 1

oxidation state most frequently and why?
(b) Which of the following cations are coloured in aqueous solution and why?

S c^{3 +}, V^{3 +}, T i^{4 +}, M n^{2 +}

(

S c = 21, V = 23, T i = 22, M n = 25

Q. (i) Name the elements of

3 d

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(ii) Which transition metal of

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E_{(M^{2 +} / M)}^{o}

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(iii) Out of

{C r}^{3 +}

{M n}^{3 +}

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+ 2

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(v) Complete the following equation

M n O_{4}^{-} + 8 H^{+} + 5 e^{-} ⟶

Q. Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.

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