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Which among the following is thermally l...

Which among the following is thermally least stable?

A

`K_(2)CO_(3)`

B

`Na_(2)CO_(3)`

C

`Cs_2 CO_(3)`

D

`Li_(2)CO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
Among `Li^(+) , Na^(+) , K^(+)` and `Ba^(2+) , Li^(+)` has the smallest size and hence the highest polarising power . As a result , `Li_(2)CO_(3)` has the least ionic character and hence has the least stability .
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PRADEEP-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS) -Competition Focus JEE (Main and Advance)/Medical Entrance (Multiple Choice Questions (With One Correct Answer)) Group 2 Elements - Alkaline Earth Metals
  1. When BaCl(2) is added to an aqueous salt solution , a white ppt. is ob...

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  2. Which of the following on thermal decomposition yields a basic as wel ...

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  3. Which among the following is thermally least stable?

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  4. On heating which of the following release CO(2) most easily ?

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  5. Which of the following is least thermally stable ?

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  6. A sodium salt of an unknown anion when treated with MgCl(2) gives whit...

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  7. The compound A on heating gives a colourless gas and a residue that is...

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  8. Be and Al exhibit diagonal relationship . Which of the following state...

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  9. In context with beryllium, which one of the following statements is in...

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  10. which one of the following represents the composition of carnallite mi...

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  11. Calcium is obtained by the

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  12. Which of the substances can be used for drying neutral or basic gases ...

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  13. The substance not likely to contain CaCO(3) is

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  14. Suspension of slaked lime in water is known as

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  15. The reaction of Cl(2) and X gives bleaching powder . X is

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  16. Which one of the following is present as an active ingredient in blea...

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  17. Bleaching powder loses its power on keeping for a long time because

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  18. The product obtained a result of a reaction of nitrogen with CaC(2) is

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  19. Plaster of Paris is represented as

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  20. Dead burnt plaster is

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