Which has lowest thermal stability? | Chemistry | SolveeIt

Question

Which has lowest thermal stability?

$Li _{2} CO _{3}$

$Na _{2} CO _{3}$

$K _{2} CO _{3}$

$Rb _{2} CO _{3}$

Answer

$Li _{2} CO _{3}$

Explanation

Solution

Since the alkali metals are highly electropositive, their carbonates are highly stable towards heat. As the electropositivity increases down the group, the stability is in order of : CsCO > Rb CO > K CO > Na CO > LiCO Lithium carbonate decomposes on heating.

Chemistry Question on GROUP 1 ELEMENTS

Solution