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Conductivity MP BP and Electronegativity (Group 2)

Among the car...

Question

Among the carbonates of alkali metals which one has highest stability :

C s_{2} {C O}_{3}

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{R b}_{2} {C O}_{3}

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K_{2} {C O}_{3}

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{N a}_{2} {C O}_{3}

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Solution

The correct option is B $C s_{2} {C O}_{3}$
As we go down the group the stability of metal carbonates increases. The larger compounds further down require more heat than the lighter compounds in order to decompose. So $C s_{2} {C O}_{3}$ has the highest thermal stability than the other given carbonates.
Hence option A is correct.

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