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The elements of 3d transition series are...

The elements of 3d transition series are given as :
Sc Ti V Cr Mn Fe Co Ni Cu Zn
Answer the following :
(i) Write the element which shows maximum number of oxidation states. Give reason.
(ii) Which elements has the highest m.p?
(iii) Which element is a strong oxidizing agent in +3 oxidation state and why ?

Text Solution

Verified by Experts

(i) Mn shows maximum no. of oxidation states because the electronic confutation is 3d5 `4S^(2)` and 4S are close in energy. It has maximum no. of e- s to lose or share. Hence, It shows maximum no. of oxidation states.
(ii)k Chromium has highest m.p.
(iii) Scandium shows only + 3 oxidation state.
(iv) Mn is a strong oxidizing agent in +3 oxidation state as Mn3+ is 3d4 whereas, Mn2+ is `3d^(5)` system which is more stable due to partial filled electronic configuration.
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The elements of 3d transition series are given as : Sc Ti V Cr Mn Fe Co Ni Cu Zn Answer the following : (i) Write the elements which shows maximum number of oxidation states. Give reason. (ii) Which element has the highest m.p. ? (iii) Which element shows only +3 oxidation state ? (iv) Which element is a strong oxidising agent in +3 oxidation state and why ?

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Knowledge Check

  • The correct order of decreasing third ionisation enthalpy of Ti, V, Cr, Mn is :

    A
    `Mn gt Cr gt V gt Ti`
    B
    `Ti gt V gt Cr gt Mn`
    C
    `Cr gt Mn gt V gt Ti`
    D
    `V gt Mn gt Cr gt Ti`

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