The incorrect statement(s) among (a) - (c) is (are) : (a) W ( VI ) is more stable than Cr ( VI ) . (b) in the presence of HCl , permanganate titrations provide satisfactory results. (c) some lanthanoid oxides can be used as phosphors

Question

The incorrect statement(s) among (a) - (c) is (are) : (a) W ( VI ) is more stable than Cr ( VI ) . (b) in the presence of HCl , permanganate titrations provide satisfactory results. (c) some lanthanoid oxides can be used as phosphors, (b) and (c) only, (a) and (b) only, (b) only, (a) only

MARKS App · Accepted Answer

(a) In transition metals on moving down the group higher oxidation states are more stable due to smaller size of atoms, due to lanthanide and actinide contractions. (b) KMnO 4 can oxidise chloride into chlorine, so it will give incorrect results (c) its a fact

Search any question & find its solution

Looking for more such questions to practice?