Dãy muối nitrat khi nhiệt phân tạo thà...

Câu hỏi: Dãy muối nitrat khi nhiệt phân tạo thành oxit kim loại, khí ${\mathrm{NO}}_2 \mathrm{và} {\mathrm{O}}_2$ là

A. ${\mathrm{NaNO}}_3, \mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2, \mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2, {\mathrm{AgNO}}_3.$

B. $\mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2, \mathrm{Fe}{\left({\mathrm{NO}}_3\right)}_3, \mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2, {\mathrm{AgNO}}_3.$

C. $\mathrm{Al}{\left({\mathrm{NO}}_3\right)}_3, \mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2, \mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2, \mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2.$

D. ${\mathrm{KNO}}_3, \mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2, \mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2, \mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2.$