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The number of protons added to the number of neutrons in a nucleus give that isotope's atomic weight.

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Which numbers are added to give the nucleon number of an ion?

No need to add. Use the elemnts mass number, which is the number of protons plus the number of neutrons


Does the nucleus of an atom have protons neutrons electron?

no, they don't. instead they make up the nucleus of the atom. protons and neutrons are made of quarks, which are held together by gluons.which means that the nuceuls and electrons together make the atom.


What has no charge but add mass to the atoms?

Neutrons and they are found inside the nucleus.


Which particles are found in the nucleus of the atom?

They're called nucleons. The two types of nucleons are protons and neutrons. Protons are positively charged nucleons and determine, in an atom, what element that atom is. Neutrons have no charge and just supposedly add mass to an atom.


Identify the subatomic particles protons and neutrons?

All elements have protons and neutrons within their nuclei. The protons are positively charged and the neutrons have no charge, they are only there to add to the size and mass of the atom. The protons are what attract the electron cloud surrounding the nucleus. You can determine the amount of protons and typically neutrons within an atom by the atomic number.


Where is most of the mass of an atom contained?

When calculating the mass of an atom, you add the mass of the protons and the neutrons. This is the nucleus of the atom. The electrons are small enough to be ignored except in the most delicate calculations.


What is equal to the total number of protons and neutrons?

If you add the number of protons to the number of neutrons in an atom, you have calculated that atom's atomic mass.


What is the mass number and how do you calculate it?

The mass number is the total number of protons and neutrons in an atom's nucleus. To calculate the mass number, simply add the number of protons and neutrons together in the nucleus of an atom.


What do you get if you add one neutron to a hydrogen nucleus?

If you add the number of protons and neutrons in an atomic nucleus, you get the number of nucleons. This is usually a good approximation to the atomic mass in amu, since both protons and neutrons have a mass that's pretty close to one amu. The number will be slightly off, because electrons contribute as well, protons and neutrons don't have exactly the same mass, and there's something called the atomic mass defect that has to do with the binding energy of the nucleus, but it should be fairly close.


What total number is the mass number of an atom obtained by?

Add the Neutrons and Protons. The electrons are irrelevant in the mass number.


The protons and neutrons in an atom add up to give the atom's?

Mass number/Atomic Mass


What makes up the weight an atom or molecule?

The number of protons and neutrons controls the weight of an atom.