Its atomic number - how many protons it has.
Periods represent the number of shells in a particular element
Atomic numbers represent the number of protons in an atom's nucleus. It also defines the element, as each element has a unique atomic number.
to what number the element can count to
The number of protons and electrons of the atom in a neutral state.
they represent the number of protons the element has and what is their charge
The hole numbers on the top of each element represent the atomic number. This number indicates the number of protons in the nucleus of an atom of that element. It is a unique identifier for each element on the periodic table.
atomic mass
The small number used to represent the number of ions of a given element in a chemical formula is called a subscript. Subscripts are written to the right of the element's symbol and indicate the number of atoms or ions present.
The numbers on Mendeleev's periodic table represent the atomic number of each element, which is the number of protons in the nucleus of an atom. This number determines the element's identity and its placement in the periodic table.
a molecule or compound. Each element is represented by its chemical symbol (e.g. H for hydrogen), and the number of atoms of each element is denoted by a subscript following the symbol (e.g. H2O for water).
The atomic number of an element represents the number of protons in the nucleus of an atom of that element. It determines the identity of the element on the periodic table and distinguishes it from other elements.
It represents the mass number of that particular isotope.