Lionel has a hot plate, a thermometer, a container of water, a spoon, and a small hammer. Using these tools, Lionel can test several properties of an ionic compound.Which property of the compound will he not be able to test?

A hot plate can be used to investigate melting point, water can test whether the compound dissolves, and a small hammer can test brittleness. These tools do not reveal the compound’s atomic structure, which would require specialized equipment such as a microscope or diffraction instrument. Therefore, atomic structure is the property Lionel cannot test.

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