Chemistry
Grade-9
Easy
Question
Which of the following is true about lattice energy?
(i) Lattice energy ∝ charge
(ii) Lattice energy ∝ 1/distance
(iii) Lattice energy ∝ hydration energy
- Only (i)
- Only (i) & (ii)
- Only (ii) & (iii)
- All are true
Hint:
Ionic compounds have high lattice energy.
The correct answer is: All are true
- Lattice energy is the energy required to completely separate a mole of a solid ionic compound into its gaseous ions.
- Lattice energy is directly proportional to the charge of the ions.
- Lattice energy is inversely proportional to the distance of separation.
- Lattice energy is directly proportional to hydration energy.
U=k(Q1Q2)/d
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