The different isotopes have different Atomic Mass numbers, because the isotope has different numbers of neutrons. The protons and electrons are the same, so the change in mass number is the same as the change in the number of neutrons.
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 amount of protons. atomic weight is the mean atomic mass measured by the quantity of protons and neutrons taking into account all isotopes and their relative abundances.
The number of protons equal the atomic number.
Atomic number is equal to number of protons. They are same in number.
Not sure
Symbol, atomic number, and atomic weight.
atomic number or atomic weight. Subscript: atomic number, superscript: atomic weight: 94Pu239 or 239Pu
equal to number of protons
Atomic weight of an element is the number of protons plus neutrons in the nucleus, atomic number is the number of protons only.
fluorine is a non metal element. Atomic number of it is 9.
No, the atomic number is the number of protons that an atom contains. Atomic weight is the number of protons and neutrons.
Atomic number of uranium: 92 Atomic weight of uranium: 238,02891
Its atomic number is 29 and its standard atomic weight is 63.5 g/mol.
Subtract the atomic number from the atomic weight.
atomic number or atomic weight. Subscript: atomic number, superscript: atomic weight: 94Pu239 or 239Pu
Atomic Number = 6. Atomic Weight = 12.011
Calcium has an atomic weight of 40. Other info about Calcium: Symbol: Ca Name: Calcium Atomic Number: 20 Atomic Weight: 40.08 Number of Neutrons: 20 (atomic weight - atomic number) Number of Protons: 20
Atomic weight/ mass = number of protons + number of neutrons
Subtract the atomic number from the atomic weight.
Atomic weight in atomic mass units = the number of protons + the number of neutrons. The number of protons is your atomic number. Subtract that from the atomic weight for the number of neutrons.
No, the atomic number is the same number of protons and electrons. To find the neutrons, you subtract the atomic weight by the atomic number. Make sure to round the atomic weight as well.
The atomic number is: 6. The atomic weight is 12.011