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Which alkali metal carbonate is thermall...

Which alkali metal carbonate is thermally unstable and why?

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`Li^(+)` ion being small in size, cannot stabilize large `CO_(3)^(2-)` ion and therefore, `Li_2CO_3` is unstable. Other alkali metal ions are large in size and can easily stabilize large `CO_3^(2-)` ions. This is because of lattice energy effects.
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -HIGHER ORDER THINKING SKILLS
  1. Name an element which is invariably bivalent and whose oxide is solubl...

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  2. BeCl2 gives an acidic solution when dissolved in water. Why?

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  3. Alkali metal ions are colourless as well as diamagnetic. Explain

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  4. Lil3 is less stable than CsI3. Why?

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  5. Describe the difference in structure between CaH2 and BeH2

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  6. Why it LiF almost insoluble in water while LiCl is soluble not only in...

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  7. The alkali metal having low melting point is

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  8. LiH, LiF and Li(3)N show exceptional thermal stabilites. Comment.

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  9. The combustion of Li, Na, K in excess of air gives major oxides

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  10. Which alkali metal carbonate is thermally unstable and why?

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  11. Which out of the following and why can be used to store an alkali meta...

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  12. Mg^(2+) ion more highly hydrated than Na^(+) ion.

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  13. Explain the following: (a) Be(OH)2 dissolves in sodium hydroxide bu...

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  14. MgN(2) when reacted with water gives NH(3) and HCl. However, MgCl(2) d...

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  15. LiH is more stable than NaH. Explain.

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  16. Sodium fire in the laboratory should not be extinguished by using wate...

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  17. In the reaction of sodium hydride and water:

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  18. The crystalline salts of alkaline earth metals contain more water of c...

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