When nio 1s heated with a small amount of li0 in air at 1200°c, a non-stoichiometric compound li,ni-0 is formed. this compound is: (a) an n-type semiconductor c

When NiO 1s heated with a small amount of Li0 in air at 1200°C, a non-stoichiometric compound Li,Ni-0 is formed. This compound is: (a) An n-type semiconductor containing only Ni" (b) An n-type semiconductor containing Ni and Ni )A p-type semiconductor containing N and Ni (d)Ap-type semiconductor containing only Ni"