The correct order of increasing thermal stability of `K_(2)CO_(3),MgCO_(3),CaCO_(3),` and `BeCO_(3)` is

Options

A. `BeCO_(3)ltMgCO_(3)ltCaCO_(3)LtK_(2)CO_(3)`
B. `MgCO_(3)ltBeCO_(3)ltCaCO_(3)ltK_(2)CO_(3)`
C. `K_(2)CO_(3)ltMgCO_(3)ltCaCO_(3)ltBeCO_(3)`
D. `BeCO_(3)ltMgCO_(3)ltK_(2)CO_(3)ltCaCO_(3)`

Answer

1

Explanation

More the polarising power of cation more is the distortion on `CO_(3)^(2-)` ions.More will be the instability-Hence the order of increasinig thermal stability is `BeCO_(3)ltMgCO_(3)CaCO_(3)ltK_(2)CO_(3)`