atomic number atomic mass

If the atomic number of an atom "X" is A and atomic mass number is Z then



atomic number atomic mass number



table conveniently tells you each element's atomic number. Atomic Mass



This picture explains the ideas of "atomic mass" and "atomic number".



Atomic number (z) = number of protons. Atomic mass = mass of protons + mass



Neutrons (N) = Atomic Mass - Atomic Number (Z). Building the Elements



Atomic Number (Z) , Mass Number (A): A = #p + #n, Z = #p = #e



Screen shot from CHEMIX School Periodic table - Relative atomic mass table



Neutrons = Atomic Mass Number - Proton Number



chemistry tutorials - mass and atomic number. On the picture above,



Hydrogen, another example, has an atomic number of 1 and an atomic mass of 1



Atomic Number, Mass Number, Atomic Mass, Isotopes



the atomic mass is unchanged; the atomic number increases by 1



It contains the element's chemical symbol, atomic number, atomic mass,



Technetium: Atomic mass number given for longest lived



9/23 Atomic Number and Atomic Mass Number



Atomic Number: 87. Atomic Mass: (223.0) amu



In the modern periodic system the elements are ordered after atomic number,



Symbol: Na Atomic Number: 11. Atomic Mass: 22.98976928



Average Atomic Mass: 63.546. Isotopes: cu-63, cu-65