The metal carbonate which decomposes easily on heating is:
Beryllium carbonate $$BeCO_3$$ decomposes easily on heating due to following two factors: (1) The small $$Be^{2+}$$ ion has high polarisation power and the carbonate ion has high polarisability. (2) It rapidly decomposes to $$BeO(s)$$ and $$CO_2(g)$$. The decomposition product, i.e., beryllium oxide has high stability due to tight packing of $$Be^{2+}$$ ion and oxide ion.
In the following table are given eight elements, $$A, B, C, D, E, F, G$$ and $$H$$ (here letters are not the usual symbols of the elements) of the Modern Periodic Table with the atomic numbers of the elements in parenthesis. Period Group $$1$$ Group $$2$$ $$2$$ $$A(3)$$ $$E(4)$$ $$3$$ $$B(11)$$ $$F(12)$$ $$4$$ $$C(19)$$ $$G(20)$$ $$5$$ $$D(37)$$ $$H(38)$$ Out of the three elements $$B, E,$$ and $$F$$, which one has the biggest atomic size?
Which of the following does not exist in solid state?
The compound insoluble in acetic acid is :**
The correct order of the solubility of alkaline-earth metal sulphates in water is:
Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?
The decomposition temperature is maximum for:
Solubility of the alkaline earth's metal sulphates in water decreases in the sequence :
On heating which of the following $$CO_2$$ releases most easily?
Which one of the following alkaline earth metal carbonates is thermally the most stable?
Which of the following will have lowest value of $$K_{sp}$$ at room temperature?