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Standard Electrode Potentials

For which ele...

Question

For which element of first transition series the oxidation potential value
$(M \to M^{2 +} + 2 e^{-})$ is lowest

A

Mn

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B

Fe

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C

Ni

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D

Cu

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Solution

The correct option is D
Cu

In electrode potential series, the standard electrode potential of Cu is higher therefore oxidation potential is lowest.

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Similar questions

For which element of first transition series the oxidation potential value
$(M \to M^{2 +} + 2 e^{-})$ is lowest

Q. Explain the oxidation state of first row element of transition series.

Q. What is the trend in ionic radii of elements of first transition series when oxidation state changes from

+ 2

+ 3

Q. (i) Why do transition elements show variable oxidation states?
(ii) Name the element showing maximum number of oxidation states among the first series of transition metals from

S c (Z = 21)

Z n (Z = 30)

.
(iii) Name the element which shows only

+ 3

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(iv) What is lanthanoid contraction? Name an important alloy which contains some of the lanthanoid metals.

Q. The elements of 3d transition series are given as:

\begin{matrix} S c & T i & V & C r & M n & F e & C o & N i & C u & Z n \end{matrix}

Answer the following:
(i) Write the element which is not regarded as a transition element. Give reason.
(ii) Which element has the highest m.p.?
(iii) Write the element which can show an oxidation state of +1.
(iv) Which element is a strong oxidizing agent in +3 oxidation state and why?

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