NEETs-Block ElementsHard

Question

Thermal stability of MCO3 is in order :

Options

A.BeCO3 < MgCO3 < CaCO3 < SrCO3 < BaCO3
B.MgCO3 < BeCO3 < CaCO3 < SrCO3 < BaCO3
C.CaCO3 < SrCO3 < BaCO3 < BeCO3 < MgCO3
D.BaCO3 < SrCO3 < CaCO3 < MgCO3 < BeCO3

Solution

The stability of carbonates increases with increasing metallic character i.e. electropositive character. Down the group, ionisation energies decreases and thus electropositive character increases.

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