JEE Main 2019 Chemistry question

Chemistry The s-Block Elements JEE Main 2019

Not in JEE Main or NEET syllabus

The correct sequence of thermal stability of the following carbonates is:

(A)BaCO < SrCO < CaCO < MgCO
(B)MgCO < CaCO < SrCO < BaCOCorrect
(C)BaCO < CaCO < SrCO < MgCO
(D)MgCO < SrCO < CaCO < BaCO

Answer: (B)

Solution

Stability increases down the group with cation size.

Question ID VK-010144