Atomic Mass = mass of protons + mass of neutrons.
Atomic mass = Mass of protons + Mass of neutrons
The Atomic Mass is equal to the number of protons plus neutrons. So if you know the atomic number then you can find out the number of neutrons Atomic # is the amount of Protons or Electrons Atomic Mass- Number of protons plus neutrons Atomic Mass-Atomic Number = Amount of neutrons
To find the number of neutrons simply subtract the atomic number from the atomic mass. In this case there are two neutrons.
You need to find the atomic number, and the atomic mass. The atomic number i the number of PROTONS in the nucleus, the atomic mass, or mass number, is the number of PROTONS and NEUTRONS in the nucleus. To find the number of neutrons you subtract the atomic number from the mass number.
An isotope of lithium with an atomic mass of ten would have an atomic number of 3, meaning it has 3 protons. To find the number of neutrons, subtract the atomic number from the atomic mass: 10 (atomic mass) - 3 (atomic number) = 7 neutrons. Therefore, an isotope of lithium with an atomic mass of ten would have 7 neutrons.
Yttrium has 50 neutrons. To find the number of neutrons, subtract the atomic number (39) from the atomic mass (89): 89 - 39 = 50 neutrons.
Number of neutrons = Atomic mass of an isotope - Number of protons (Atomic number)
The number of neutrons= Atomic mass of an isotope-Atomic number of the elemnent For the atomic weights of elements (not mass) please read the IUPAC report at the link below.
To find the number of neutrons in an atom, you would subtract the atomic number (number of protons) from the atomic mass (sum of protons and neutrons). The difference between the atomic mass and the atomic number gives you the number of neutrons in the atom.
Atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom the number of neutrons would equal the mass number minus the atomic number.
You would subtract the atomic number from the mass number.
The atomic mass is equal to the number of protons plus neutrons. So if you know the atomic number then you can find out the number of neutrons Atomic # is the amount of Protons or Electrons Atomic Mass- Number of protons plus neutrons Atomic Mass-Atomic Number = Amount of neutrons