The statement that indicates a substance may be an ionic compound is it is made up of a crystal lattice. Thus, the correct option is D.
An ionic compound may be defined as such compounds that are usually made up of positively charged ions called cations and negatively charged ions called anions. Such compounds are generally neutral in nature.
The ionic compounds typically contain ions that are held together by the attractive forces among the oppositely charged ions. The best example of an ionic compound is Sodium Chloride (Na+ Cl-).
Ionic compounds generally have high melting and boiling points. Such compounds are made up of ions rather than molecules. They can not be flattened by a force, as they dissociated in liquid solvents.
Therefore, the statement that indicates a substance may be an ionic compound is it is made up of a crystal lattice. Thus, the correct option is D.
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