atomic number
Subscripts
A chemical formula tells what elements make up a compound and the exact number of atoms of each element in a unit of compound. :)
atomic mass is the answer
Elements are made of atoms. Each element is made up of the same kind of atoms, having the same atomic number.
It tells what elements are present in a molecule and how many atoms of each element are present.
the number of protons in each atom
The number of protons in the nucleus of each atom of chlorine.
It tells what elements are in a compound and the number of each type of atom in each molecule/formula unit.
Atoms of each element have a specific number of protons.
For an ionic compound, the name of the positive ion comes first, followed by the name of the negative ion. It also tells the ratio of the atoms and tells what atoms make up the compound.they describe the type and number of atoms in a molecule of the compound
One mole of any element will have Avogadro number (6.023 x 1023) of atoms And this number remains the same for all elements.
Some elements have isotopes - atoms with a different number of neutrons.
The number of protons in the nuclei of their atoms. This is the atomic number of an element and each element has its own unique atomic number.