Alkali metal carbonates are stable but carbonates of alkaline earth metals decompose on heating to liberate CO_(2) Why?

Alkali metal carbonates are stable but carbonates of alkaline earth me

1.	Alkali metal carbonates are stable but carbonates of alkaline earth metals decompose on heating to liberate CO_(2) Why?
Answer» <html><body><p></p>Solution :Polarising power of <a href="https://interviewquestions.tuteehub.com/tag/alkaline-371462" style="font-weight:bold;" target="_blank" title="Click to know more about ALKALINE">ALKALINE</a> earth metal cations is more than that of alkali metal cations because of small size and <a href="https://interviewquestions.tuteehub.com/tag/high-479925" style="font-weight:bold;" target="_blank" title="Click to know more about HIGH">HIGH</a> charge. Alkaline earth metal cations polarise a large `CO_(<a href="https://interviewquestions.tuteehub.com/tag/3-301577" style="font-weight:bold;" target="_blank" title="Click to know more about 3">3</a>)^(2-)` ion leading to the formation of more stable oxide (<a href="https://interviewquestions.tuteehub.com/tag/mo-548568" style="font-weight:bold;" target="_blank" title="Click to know more about MO">MO</a>) and liberate `CO_(2)` gas. <br/> `MCO_(3)rarrMO+CO_(2)<a href="https://interviewquestions.tuteehub.com/tag/uarr-3241817" style="font-weight:bold;" target="_blank" title="Click to know more about UARR">UARR</a>`</body></html>