Lattice energy decreases with the increase in size of ion because oppositely charged ions
Correct answer: C. Become less tightly held
- A. Have close packing
- B. Have low empty spaces
- C. Become less tightly held
- D. Have strong electrostatic forces
Explanation
Lattice energy is the energy released when ions come together to form a crystal lattice. It is inversely related to the size of the ions because larger ions have greater distances between them, leading to weaker electrostatic forces of attraction. Therefore, as the size of the ions increases, lattice energy decreases. Option C correctly identifies that larger ion sizes result in ions being 'less tightly held' together, decreasing the lattice energy.Options A and B suggest mechanisms that would increase lattice energy, which contradicts the effect of increased ion size. Option D incorrectly associates strong electrostatic forces with increasing ion size, which does not happen.
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Solids are classified by particle arrangement and bonding into crystalline, ionic and molecular forms. Questions cover crystal lattices, the shapes and properties of ionic crystals, and lattice energy, including how ion charge and ionic size affect the strength of attractions within an ionic solid.
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