CBSE Class 12-science Answered
Pl ans fast ..n all the parts pl experts
(i) Nature of bonding in La2O3 and Lu2O3 :
La2O3 is more acidic and Lu2O3 is more covalent because as the size decreases covalent character increases.
(ii) Trends in the stability of oxo salts of lanthanoids from La and Lu:
The stability of oxo salts decreases as the size from La to Lu decreases.
(iii) Stability of the complexes of lanthanoids:
Stability of the complexes of lanthanoids increases as the size of lanthanoids decreases.
(iv) Radii of 4d and 5d- block elements :
Radii of 4d and 5d- block elements are almost the same.
(v) Trends in the acidic character of lanthanoid oxides:
From La to Lu the acidic character increases.