Lattice energy of `BeCO_(3)(I), MgCO_(3)(II)` and `CaCO_(3)(III)` is in order.

The decomposition temperature of BaCO_(3) (A), MgCO_(3) (B) and CaCO_(3) (C ) follow the order

The following compounds have been arranged in order of their increasing thermal statbilties . Identify the correct order . K_(2)CO_(3) (I)" "MgCO_(3) (II) CaCO_(3) (III)" "BeCO_(3) (IV)

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order : K_(2)CO_(3)(I),MgCO_(3)(II),CaCO_(3)(III),BeCO_(3)(IV)