Which of the following oxide is least stable? and Why?
Is it A ?
Reason behind my answer :
Hg and Mg are metals and electropositive in character
So they form stable compounds with electronegative Oxygen
Among CO and CO_2 CO is more stable due to higher Bond order
HgO is the answer.
By stability if you mean thermal stability, then yes, HgO is the least stable. It decomposes on heating to give Hg metal and oxygen gas.
In question it is not directly mentioned as thermal stability...it might be that , I suppose.
Thanks a lot.
Which would be the most stable ?
I think so but not sure. But I don’t think we get anything by heating CO or CO2 either.