Question

explanation: a/ speculate on the reason(s) that transition metal oxides are more frequently nonstoichiometric as compared to non-transition metal oxides.

b/If high pressure is applied to a compound MX, which structure, CsCl or NaCl,would be favored?

please explain and will rate fast

Answer 1

A.

The Transition metal oxides are more frequently non-stoichiometric as compared non-transition metal oxide.

It is because the transition metal ions exhibit several oxidation states, where as non-transition metal ions exhibit only fixed oxidation state.

B.

CsCl is body centered cubic lattice, which has packing fraction of 68 %

whereas NaCl face centered cubic lattice, has packing fraction of NaCl is 74 %

At high pressure the structure which has higher packing fraction will be favoured, so NaCl structure will be favoured.