What is the name of the energy that is released when an ionic compound forms?

Question

Question

This question was previously asked in

MP Excise Constable Official paper (Held On: 25 Feb 2023 Shift 3)

Answer 1

The correct answer is Lattice energy.

Key Points

Lattice energy is the energy released when one mole of an ionic compound forms from its free ions in the gas phase.
This energy is a measure of the strength of the bonds in an ionic solid.
It is always exothermic because energy is released during the formation of the ionic lattice.
Lattice energy is an important factor in determining the stability and melting points of ionic compounds.
The greater the lattice energy, the more stable the ionic compound.

Additional Information

Ionization energy
- Ionization energy is the energy required to remove an electron from a gaseous atom or ion.
- It is a measure of the tendency of an atom to retain its electrons.
- Higher ionization energy indicates a stronger hold on the electrons.
Electron gain enthalpy
- Electron gain enthalpy refers to the change in energy when an electron is added to a neutral atom in the gas phase to form a negative ion.
- It can be either exothermic or endothermic, depending on the element.
- An exothermic electron gain enthalpy means the process releases energy.
Electro-positivity
- Electro-positivity is the measure of an element's ability to donate electrons and form positive ions (cations).
- It is the opposite of electronegativity.
- Metals typically exhibit high electro-positivity.