It is an atom.
molecule
a molecule
The smallest unit of an element that maintains the properties of that element is an atom. Atoms are composed of a nucleus containing protons and neutrons, surrounded by electrons that determine the element's chemical properties.
The smallest particle of a covalent compound that shows the properties of that compound is a molecule.
The smallest particle of a covalent compound that shows the properties of that compound is a molecule. In a covalent compound, atoms share electrons to form stable bonds, and the smallest unit that retains the chemical properties of the compound is the molecule, which consists of at least two atoms bonded together.
The smallest unit in an element is the atom.
Atom
A molecule
An atom is the smallest unit of matter that can enter into a chemical combination.
A molecule is the smallest part of a compound that still retains the properties of said compound. As the atom is the smallest particle of an element into which it can be divided and still retain all the properties of that element, the molecule is the atom's analog for a compound.
1 The smallest part of a compound that still has the properties of that compound is a molecule. A molecule consists of two or more atoms bonded together, and it retains the chemical properties of the compound it represents.
one molecule