Question

compare the lattice energy of CaO, MgO, SrO and BaO in the decreasing order ?
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Answer 1

Explanation:

hi bhamti.... my explanation for Ur question.. lattice energy is directly proportional to charge and inversely proportional to size.... according to this concept all have same anionic charge... so we don't consider charge , we consider only size.. to this small size have high lattice energy(Mgo>cao>Sro>Bao)...

suppose compound has both charge and size related means charge is the dominating factor....

Answer 2

Answer:

longer the Bond length, easy to break

Bond length MgO<CaO<SrO<BaO

lattice enthalpy MgO>CaO>SrO>BaO