Compounds OF d block element FeSO4.7H2O||CuSO4.5H2O||AgNO3|| Properties OF Lanthanoids and Actinoids

CuSO_4.5H_2O is represented as

K2Cr2O7 || KMnO4 || AgNO3

CuSO_4 . 5H_2 O is represented as :

In CuSO_(4).5H_(2)O copper is coordinated to

Bonds presents in CuSO_(4) .5H_(2)O is

CuSO_(4)*5H_(2)O belongs to

The types of bonds present in CuSO_4.5H_2O are only

(a) Complete the following chemical equations for reactions : (i) MnO_(4(aq))^(-) + S_(2)O_(3(aq))^(2-) + H_(2)O_((l)) to (ii) Cr_(2)O_(7 (aq))^(2-) + H_(2)S_((g)) + H_((aq))^(+) to (b) Give an explanation for each of the following observations : (i) The gradual decrease in size (actinoid contraction) from element to element is greater among the actinoids than that among the lanthanoids (lanthanoid contraction.) (ii) The greatest number of oxidation states are exhibited by the members in the middle of a transition series. (iii) With the same d-orbitals configuration (d^(4)) Cr^(2+) ion is a reducing agent but Mn^(3+) ion is an oxidising agent .