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The Mass Number is the number of protons plus the number of neutrons in the nucleus.

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What number tells the mass of the nucleus of an atom?

The atomic mass number is the mass of the nucleus in atomic mass units.


What is the difference between the atomic number and mass of an element?

Atomic number is the number of protons in the nucleus of the atom. But Atomic Mass is the mass of the nucleus and mass of the electrons around the nucleus. If suppose we say the mass number then it is the total number of protons and neutrons in the nucleus. Nucleon is the common name for both proton and neutron. Hence mass number is the total number of nucleons.


What is the difference between the atomic number and the mass of an element?

Atomic number is the number of protons in the nucleus of the atom. But Atomic Mass is the mass of the nucleus and mass of the electrons around the nucleus. If suppose we say the mass number then it is the total number of protons and neutrons in the nucleus. Nucleon is the common name for both proton and neutron. Hence mass number is the total number of nucleons.


How do you calculate the number of neutrons an element has in its nucleus?

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.


If you know the atomic number and the mass number of an isotope how could you figure out the number of neutrons in its nucleus?

The mass number is the total number of protons plus neutrons in the nucleus. The atomic number is the total number of protons in the nucleus. So subtract the atomic number from the mass number and that will give you the total number of neutrons in the nucleus.


What is the difference between the atomic number and atomic mass of an element?

Atomic number is the number of protons in the nucleus of the atom. But atomic mass is the mass of the nucleus and mass of the electrons around the nucleus. If suppose we say the mass number then it is the total number of protons and neutrons in the nucleus. Nucleon is the common name for both proton and neutron. Hence mass number is the total number of nucleons.


If you know the atomic number and the mass number of an isotope how could you figure out the number of neutrons in its nucleus.?

The mass number is the total number of protons plus neutrons in the nucleus. The atomic number is the total number of protons in the nucleus. So subtract the atomic number from the mass number and that will give you the total number of neutrons in the nucleus.


How does the mass of a nucleus differ from the mass of an electron?

There is no simple answer.The mass of a nucleus depends on the number of neutrons and protons in the nucleus. The number of protons in the nucleus depends on the element. Moreover, the number of neutrons can vary between isotopes of the same element.


What is the difference of atomic number and atomic mass?

atomic number is the number of protons in the nucleus or electrons around the nucleus in an atom that is not ionized. atomic mass is the sum of the number of protons and the number of neutrons in the nucleus.


How is the radius of nucleus related to mass number?

from experiments it has been concluded that radius of nucleus is directly proportional to mass number...


What is nuclei known as?

When the atomic number of one nucleus is the same with the mass number of another nucleus and the mass number the same with the atomic number of the second nucleus, then these two nuclei are called mirror.


The mass number represents the number of?

The mass number is the sum of the neutrons and protons which exist in the atomic nucleus of an isotope.