Which is the smallest particle of an element that retains the properties of the element?

• A. Electron
• B. Atom
• C. Molecule
• D. Proton

Answer: (B)

Verified step by step guidance

1. Understand the question: It asks for the smallest particle of an element that still retains the properties of that element.
2. Recall the structure of matter: Elements are made up of atoms, which consist of protons, neutrons, and electrons.
3. Consider the options: Electrons and protons are subatomic particles and do not individually retain the chemical properties of the element.
4. Molecules are combinations of atoms and can be made of one or more elements, so they are not the smallest particle of a single element.
5. Therefore, the atom is the smallest particle that retains the chemical properties of an element.