Among the nitrate of alkali metals which one can be decomposed to its oxide on strong heating?

Alkali metals readily react with oxyacids forming corresponding salts like M_(2)CO_(3),MHCO_(3),MNO_(3),M_(2)SO_(4) etc. with evolution of hydrogen. The also dissolve in liquid NH_(3) but without the evolution of hydrogen. The colour of its dilute solution is blue but when it is heated and concentrated then is colour becomes bronze. Among the nitrate the alkali metals which one can be decomposed to its oxide easily?

Alkali metals readily react with oxyacids forming corresponding salts (like M_(2)CO_(3), MHCO_(3), MNO_(3), M_(2)SO_(4) etc) with evolution of hydrogen. They also dissolve in liquid NH3 but without the evolution of hydrogen. The colour of its dilute solution is blue when it is heated and concentrated, then its colour becomes bronze Among the nitrate of alkali metals which one can be decomposed to its oxide

Among the alkali metals, which one is radio active?

Among the carbonates of alkali metals which one has highest thermal stability ?

Among the carbonates of alkali metals which one has highest thermal stability ?

Among the carbonates of alkali metals which one has highest thermal stability ?

The carbonate which decomposes into oxide on heating is :

Among the alkali metals which one form compounds with more covalent character?