What is the representative particle for copper metal, Cu

A representative particle is the smallest unit of a substance that can be broken down without altering the composition. Matter is composed of three types of representative particles: atoms, molecules and formula units.

Atoms and Elements

Atoms are the smallest particle that can be split. Substances that contain only one kind of atom are called elements.

Molecules

The molecule is the representative particle of molecular compounds. It is also the representative particle of diatomic elements.

Formula Unit

The representative particle of an ionic compound is the formula unit. A formula unit uses a formula to calculate the basic whole number ratio of the ions in an ionic compound.

Diatomic Elements

Diatomic elements, or molecules, are made up of two atoms of the same element. These diatomic elements are not part of a compound.

6.02 × 1023 is the representative particle of copper

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