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Why does lattice enthalpy increases down the group for carbonates and sulphates of alkaline earth metals ? Why not it increases for alkali metals ? And explain about hydration energy trends in the periodic table as well.

Why does lattice enthalpy increases down the group for carbonates and sulphates of alkaline earth metals ? Why not it increases for alkali metals ? And explain about hydration energy trends in the periodic table as well.

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1 Answers

praveen kumar
144 Points
6 years ago
The lattice enthalpy of carbonates and sulphates increases in 1 st and 2 nd groups because the corbonates and sulphates are big molecules where as the first elements in these groups are small on going down the group the size of the metals increases and get fitted for corbonates and sulphates. This is the reason why lattice enthalpy if these compounds increases down the group.

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