The element of 3d transition series are given as :
Sc Ti V Cr Mn Fe Co Ni Cu Zn
Answer the following :
(i) Which element has the highest melting point and why ?
(ii) Which element is a strong oxidizing agent in +5 oxidation state and why ?
(ii) Which element is soft and why ?

Explanation

(i) The element Cr has the highest melting point because the metallic bonding is strongest due to the presence of five unpaired electron (`d^(5)` configuration )
(ii) The element Mn acts as a strong oxidising agent because it has `3d^(5)` configuration ( very stable) in +2 oxidatin state.
(iii) The element Zn is soft since the metallic bond is very weak due to teh absence of any unpaired electrons.