The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is:
BeCO3 < MgCO3 < CaCO3 < K2CO3
Stability increases as the basic character of the corresponding base increases, i.e.
KO2 (potassium superoxide) is used in oxygen cylinders in space and submarnies because it
A metal M readily forms water soluble sulphate MSO4, water insoluble hydroxide M(OH)2 and oxide MO which becomes inert on heating. The hydroxide is soluble in NaOH. The metal M is
On dissolving moderate amount of sodium metal in liquid NH3 at low temperature, which one of the following does not occur?
On passing hydrogen over heated palladium, the gas
Which one of the alkaline earth metals shows some anomalous behavior and has same electronegativity as aluminium?
When magnesium burns in air compounds of magnesium formed are magnesium oxide and
A solid compound ‘X’ on heating gives CO2 gas and a residue. The residue mixed with water forms ‘Y’. On passing an excess of CO2 through ‘Y’ in water, a clear solution ‘Z’ is obtained. On boiling ‘Z’, compound ‘X’ is reformed. The compound ‘X’ is
The carbonate that will not decompose on heating is
In which of the following the hydration energy is higher than the lattice energy?
The solubility of alkali metal hydroxide follows the order: