A molecule is 2 or more atoms clinging together in some fashion. The molecule can be simple, that is, the same substance as the atoms, or it can be compound, that is, the atoms are different, and are of a different substance as the atoms.
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One way in which a molecule of hydrogen and a molecule of oxygen differ is in their chemical formula. A molecule of hydrogen consists of two hydrogen atoms (H2), whereas a molecule of oxygen consists of two oxygen atoms (O2).
The central atom in a molecule is the atom that is bonded to multiple other atoms in the molecule, typically forming the core structure. It often determines the shape, polarity, and reactivity of the molecule.
An atom is the smallest unit of an element that retains its properties, consisting of a nucleus with protons and neutrons surrounded by electrons. A molecule is a combination of two or more atoms held together by chemical bonds. In other words, molecules are made up of atoms.
A molecule.
It is an atom.