To calculate the atomic mass of any element, add the no. of protons and neutrons. There sum will be the atomic mass. The mass of electrons is not counted towards the atomic mass.
The same way you calculate the atomic mass of other elements.
the Atomic Mass number is the number of protons/electrons in an atom
81 protons, as the atomic number of thallium is 81
The atomic mass unit (amu) is a unit of mass used to express the average mass of an atom or molecule. To calculate the atomic mass unit of gold (Au), you would look at the atomic mass of gold on the periodic table, which is approximately 197 amu.
Thalium is a metal element. Atomic mass of it is 204.
81
To calculate the atomic mass of any element, add the no. of protons and neutrons. There sum will be the atomic mass. The mass of electrons is not counted towards the atomic mass.
The same way you calculate the atomic mass of other elements.
Atomic mass - Atomic number
the Atomic Mass number is the number of protons/electrons in an atom
the Atomic Mass number is the number of protons/electrons in an atom
The atomic mass of Mg is 24.3 amu.
81 protons, as the atomic number of thallium is 81
To calculate the atomic mass of an element, add up the mass of protons and nuetrons.
the atomic mass number is the number of protons/electrons in an atom
The atomic mass unit (amu) is a unit of mass used to express the average mass of an atom or molecule. To calculate the atomic mass unit of gold (Au), you would look at the atomic mass of gold on the periodic table, which is approximately 197 amu.