Inorganic compounds are usually held together by bonds.

The correct answer is "ionic"

Explanation:

One key difference between organic and inorganic compounds is that most organic compounds are formed by covalent bonds, while most inorganic compounds are held together by ionic bonds. The fact that most inorganic compounds are held together by ionic bonds makes them highly soluble in water, because ionic bonds are easy to dissociate in water, dividing the inorganic compound into positive and negative ions. Inorganic compounds are also great conductors of electricity in this ionized state.

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