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

Options

A. `I lt II lt III`
B. `I gt II gt III`
C. `I lt III lt II`
D. `II lt I lt III`

Answer

B

Explanation

Lattice energy decreases with increase in size of the ions. The size of the cations
`Be^(2+) lt Mg^(2+) ltCa^(2+)`