Which property is best to use when determining the strength of an ionic bond in a solid?
lattice energy
conductivity
hardness
solubility

Option (a) is the correct answer.

Explanation:

Lattice energy is defined as the heat of formation of oppositely charged ions in the gaseous phase which combines to form an ionic solid.

Hence, stronger is the force of attraction between the oppositely charged ions stronger will be the strength of ionic solid.

Whereas conductivity is the ability of a substance to let current pass through it.

Hardness is the property of a substance to resist any kind of deformation.

Solubility is the property of a substance to completely dissolve into a solution.

Thus, we can conclude that lattice energy is the property which is best to use when determining the strength of an ionic bond in a solid.

Option (a) is the correct answer.

Explanation:

Lattice energy is defined as the heat of formation of oppositely charged ions in the gaseous phase which combines to form an ionic solid.

Hence, stronger is the force of attraction between the oppositely charged ions stronger will be the strength of ionic solid.

Whereas conductivity is the ability of a substance to let current pass through it.

Hardness is the property of a substance to resist any kind of deformation.

Solubility is the property of a substance to completely dissolve into a solution.

Thus, we can conclude that lattice energy is the property which is best to use when determining the strength of an ionic bond in a solid.

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explanation:

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the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)