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The mass number of an isotope of an element is defined as the sum of the numbers of protons and neutrons in the nucleus of each atom of the isotope. The atomic number is defined as the number of protons only in the nucleus. Therefore, an atom with an atomic number of 6 has 6 protons in its nucleus.

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How do you determine the number of protons electrons and neutrons present in an element by identifying its atomic and mass numbers from the periodic table?

Atomic number means number of protons present in an atom. Atomic number= number of protons. mass number = number of neutrons+ number of protons. So if you subtract the number of protons you get neutrons and if you subtract neutrons you get protons. mass number - protons= neutrons Mass number - neutrons = protons.


What is Nitrogens atomic number and mass and why does it have that?

atomic mass - 14 atomic number - 7 It has that because it has 7 protons (and electrons) = the atomic number. And it also has about 7 neutrons and roughly, the mass number = the number of neutrons+ the number of protons.


How many protons and neutrons are there in the nucleus of an atom that has an atomic number of 84 and a mass number of 210?

84 protons, the same as the atomic number, and (210 - 84) or 126 neutrons. The numbers of protons and neutrons together equals the mass number.


What equation tells you how to calculate the number of neutrons in an atoms?

This equation is:Mass number - number of protons = number of neutronsMass number is the sum of protons and neutrons and has a value near the Atomic Mass of an isotope.


The combined number of protons and neutrons?

The combined number of protons and neutrons is known as the mass number of an atom. It can be used to calculate the atomic mass by adding the total number of protons and neutrons in the nucleus of an atom.

Related Questions

How many protons and neutrons are in the nucleus of the atom?

No it is not the atomic number. We call it mass number.


What are counted in an an atom to determine mass number?

Atomic Mass: protons AND neutrons atomic number: just protons


How can the number of proton neutron and electron be calculated to get atomic number and atomic mass?

atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number atomic number is the amount of protons, equal to the atomic number, the electrons, minus the mass number


What is the atomic mass number?

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


If an atom has an atomic number of 8 and a mass of 18 how many protrons are in the atom?

It has 8 protons. The atomic number of an atom = the number of protons. The mass number is not needed in this problem. The mass number is the number of protons + number of neutrons.


How do you find the number of nutrons in an atom?

Find out how many protons (atomic number) and what the mass number of a particular element is. Then subtract the number of protons from the rounded mass number to get the number of neutrons in a particular atom.


What's atomic mass and atomic number?

The Atomic Number is the number of protons. The Atomic Mass Number is the number of protons plus the number of neutrons of a particular isotope.neutrons and protons


If Element B Has 9 As The Atomic Number And 19 As The Mass Number What is The Answer how many protons does it have?

If Element B Has 9 As The Atomic Number And 19 As The Mass Number What is The Answer how many protons does it have?


How do you determine the number of protons electrons and neutrons present in an element by identifying its atomic and mass numbers from the periodic table?

Atomic number means number of protons present in an atom. Atomic number= number of protons. mass number = number of neutrons+ number of protons. So if you subtract the number of protons you get neutrons and if you subtract neutrons you get protons. mass number - protons= neutrons Mass number - neutrons = protons.


Difference between atomic and mass number?

Atomic number shows the number of protons in an element and the mass number shows the number of protons+neutrons In an electrically neutral atom, atomic number is also the number of electrons .


How is an atomic number similar to mass number?

The nucleus of an atom consists of protons and neutrons. The number of protons in a particular nucleus is its "atomic number". The total number of protons and neutrons in a particular nucleus is its "mass number".


How many neutrons are contained in an iodine nucleus with a mass number of 132 and an atomic number of 53?

79; the mass number is the sum of the protons and neutrons, and the atomic number is the number of protons. So if you take the mass number (protons + neutrons) minus the atomic number (protons), you get the number of neutrons.