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The atomic number

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What is the name number tells you the amount of protons and neutrons in an element?

Number of protons + Number of neutrons = Mass number(number of nucleons)


Does an element's mass number tells the number of protons in its nucleus?

No, the mass number of an element represents the total number of protons and neutrons in its nucleus. To find the number of protons, you would look at the element's atomic number, which is the smaller number on the element's symbol.


The mass number of an atom indicates the number of what?

The mass number is the sum of protons + neutrons.


How do you figure out protons electrons neutrons?

Find the atomic number. That tells you the number of protons and electrons (in a neutral atom). Then find the atomic weight. The number of protons plus the number of neutrons will equal the atomic weight. So if you know the wt. just subtract the number of protons and you will have the number of neutrons.


What is the number of protons and neutrons called?

The number protons in an atom is called the atomic number (it is this number that tells us which element the atom is). The number of neutrons in an atom can change, but the term for the amount of neutrons is called an isotope. The number of protons and neutrons added together is called the atomic mass.


What the atomic mass tell the total number of?

The Atomic Mass of an element tells you what the mass of one mole (6.022 x 1023 atoms) of the element is. It sort of tells you the number of protons & neutrons in the atom, but that is not necessarily precise.


What does an element's mass number tell us?

An element's mass number tells us the total number of protons and neutrons in its nucleus. It helps to determine the element's atomic mass and differentiate it from other isotopes of the same element.


How many protons an neutrons make up an atom of Krypton-78?

An atom of Krypton-78 contains 36 protons and 42 neutrons. Krypton has an atomic number of 36, which corresponds to the number of protons. Subtracting the atomic number from the atomic mass gives the number of neutrons.


What is the atomic mass number?

The atomic mass number tells how many protons and neutrons are in a nucleus.


What is the atoms mass number?

The Atomic Mass number tells how many protons and neutrons are in a nucleus.


What does the mass number tell about an isotope?

The mass number of an isotope tells you the total number of protons and neutrons in the nucleus of that atom. It is used to distinguish different isotopes of an element, as isotopes of the same element have the same number of protons but different numbers of neutrons.


Protons electrons and neutrons are the three main parts of these?

Protons, electrons, and neutrons are the three main parts of atoms. In an atom, the nucleus contains the protons and neutrons, the electrons are found in shells around the nucleus. On the periodic table, the atomic number tells you the number of protons of an element.