Question

- with the help of activity Show different samples of metals and non metals mixture and .compound​

Answer 1

Answer:

i) Transition metals and their compounds show catalytic activities because of Variable or multiple oxidation states, ability to form complexes, they provide large surface area for adsorption.

ii) Separation of a mixture of Lanthanoid elements is difficult because of Similar size, similar properties

iii) Because they donot have unpaired electron and have weak interatomic metallic bonding also have completely or fully filled d orbitals

b)

i) 2Na2CrO4 + 2 H+ → Na2Cr2O7 + 2 Na+ + H2O

ii) 2MnO2 + 4KOH + O2 → 2K2MnO4 + 2H2O