Sodium chloride is a lattice. There are only two elements.
The chemical formula shows you this. The subscripted number next to each element shows how many atoms are present in a molecule or formula unit. If no number is shown, then only one atom of that element is present.
The number of atoms of each element present in a molecule is indicated by the subscript to the right of the element symbol in the chemical formula. For example, in H2O, there are 2 hydrogen atoms and 1 oxygen atom.
The chemical formula shows you this. The subscripted number next to each element shows how many atoms are present in a molecule or formula unit. If no number is shown, then only one atom of that element is present.
The formula unit of sodium chloride has only two atoms.
1 Na and 1 Cl
The type and the number of atoms of each element present.
The number of atoms of that element in the molecule
Subscripts in a compound are used to indicate the number of atoms present for each element in the compound. They show the ratio at which the elements are combined to form the compound. Each subscript number represents the number of atoms of the element that follows it.
A molecular formula.
same number of each element
Hydrogen - 8 Oxygen - 4 Carbon - 9 So, shorthand formula is C9H8O4 = aspirin
The compound NaCl, or sodium chloride, consists of two types of atoms: sodium (Na) and chlorine (Cl). There is one sodium atom and one chlorine atom in each formula unit of NaCl, resulting in a total of two atoms in the compound.