With the exception of Beryllium the Group II nitrates thermally decompose by:
2Mg(NO3)2 ----- 2MgO + 4NO2 + 02
This results in 3 different oxygen species. Does anybody know the exact mechanism for this reaction? I thought it might be:
2NO3(-ve 1) ----- 2NO2 (+1) + O (-ve 2)
NO3(-ve 1) + NO2 (+ve 1) ------ 2NO2 + O(radical) (*2, radicals form O2)
I'm not very certain though, my teacher wasn't sure either. He suggested another mechanism where two negative ions combined but I wasn't very sure about it.