To find the number of neutrons in an isotope you subtract the atomic number from the mass number.
you need to round up the atomic # (number) so that you can get your most accurate guestemated #
all you need to know is how many protons and neutrons are in the atom.
you have to know the number of the electrons.
The atomic number of each isotope is needed.
Number of protons
The abundance percentage of each isotope.
the Atomic Mass number is the number of protons/electrons in an atom
The atomic weight minus the number of protons = the atom's neutrons.
Atomic mass is simply the sum of the number of protons and the number of neutrons. If an atom has "A" protons and "B" neutrons, its atomic mass is A + B.
because an atomic number is the same as the number of electrons in an atom (not ion)
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.
You calculate the number of neutron in the nucleus of an atom by : atomic mass - atomic number = neutron number. :) hope this helps
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
That should be mass, not weight. The mass of one atom of Ag doesn't depend on the size of the sample. Also, you can't "calculate" the mass of one atom from the information provided. You can look it up - or you can look up the atomic mass of Ag, and multiply it by the atomic mass unit.
Atomic number = number of protons in an atom, and = number of electrons in an atom.
the atomic mass number is the number of protons/electrons in an atom
The atomic weight minus the number of protons = the atom's neutrons.
To calculate the atomic mass of an element, add up the mass of protons and nuetrons.
Atomic weight minus number of protons.
Atomic mass is simply the sum of the number of protons and the number of neutrons. If an atom has "A" protons and "B" neutrons, its atomic mass is A + B.
because an atomic number is the same as the number of electrons in an atom (not ion)
Look up the atomic number of the element. The atomic number is the number of protons, in a neutral atom this is the same as the number of electrons.