Atomic Mass is the average masses of all the isotopes known for that element as they occur in earth's nature.
Atomic number is the element's identity, the number of protons the nucleus has, will never change.
Mass number is [NOT just another way to say atomic mass.]
Added:
Mass number is equal to the number of protons AND neutrons, that is of ONE particular isotope of an element. This is a round figure, not an average like atomic mass.
Atomic number is the number of protons in the nucleus of an atom.Mass number is the number of protons plus neutrons in the nucleus of an atom of a specific isotope.Atomic mass is the total mass of a an atom of a particular isotope, not just the mass of the nucleus. Atomic mass is usually measured in atomic mass units (amu), and is the total mass of protons, neutrons, and electrons in an individual atom of the isotope.
Type your answer here..The Atomic Mass Unit tells us that ,How heavy a substance as compare to the other.
atomic number is a number atomic mass is a mass
Atomic number = Number of protons Atomic mass = Mass of protons + mass of neutrons
Atomic Number is 17 - atomic mass is 35.5
Silicone has that atomic mass. Atomic mass number is 28.
No. Number of neutrons = Atomic mass - Atomic number
mass number=atomic number+no. of neutrons
Atomic Mass (Atomic weight) Atomic Mass (Atomic weight) or mass number.
Atomic number = 12 Atomic mass = 24
Atomic number is 19, atomic mass is 39.
The atomic number is 88 and the atomic mass is 226