1. Tardigrade
  2. Question
  3. Chemistry
  4. Assertion: Lithium carbonate is not so stable to heat. Reason: Lithium being very small in size polarizes large CO 32- ion leading to the formation of more stable Li 2 O and CO 2

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Q. Assertion : Lithium carbonate is not so stable to heat.
Reason : Lithium being very small in size polarizes large $CO _3^{2-}$ ion leading to the formation of more stable $Li _2 O$ and $CO _2$

The s-Block Elements

Solution:

Lithium carbonate is unstable to heat; lithium being very small in size polarises a large $CO _3^{2-}$ ion leading to the formation of more stable $Li _2 O$ and $CO _2$.