Answer is:
K2CO3
Explanation:
Group 1 carbonates are thermally stable except Li2CO3.
Answer is:
NaHCO3
Explanation:
Only group 1 bicarbonates are stable in solid state, except LiHCO
Answer is:
LiH > NaH > KH > RbH > CsH
Explanation:
Ionic character of the hydrides increases from LiH to CsH, so thermal stability decreases.
Answer is:
It is more electro-positive
Explanation:
On moving down the group, electro-positive character increases.