![]() ![]() Otherwise, we will assume that elements exist as individual atoms, rather than molecules. Other elements exist as molecules-for example, sulfur normally exists as an eight-atom molecule, S 8, while phosphorus exists as a four-atom molecule, P 4 (see Figure 3.3 “Molecular Art of S”). Other diatomic elements have similar formulas: O 2, N 2, and so forth. (Sometimes only the word formula is used, and its meaning is inferred from the context.) For example, the molecular formula for elemental hydrogen is H 2, with H being the symbol for hydrogen and the subscript 2 implying that there are two atoms of this element in the molecule. As with any molecule, these elements are labelled with a molecular formula, a formal listing of what and how many atoms are in a molecule. Other elements also exist naturally as diatomic molecules (see the list “Elements That Exist as Diatomic Molecules”). For example, hydrogen and oxygen exist as two-atom molecules. Some elements exist naturally as molecules. A molecule, however, is composed of more than one atom. In some respects, a molecule is similar to an atom. ![]() A molecule is the smallest part of a substance that has the physical and chemical properties of that substance. These multiatom combinations are called molecules. There are many substances that exist as two or more atoms connected together so strongly that they behave as a single particle. Determine a formula of a molecule based on its name.Name simple molecules based on their formulas. ![]()
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