How do you get the number of neutrons in a element?

Answer 1

To find the number of neutrons in an atom you would subtract the protons from the Atomic Mass. The number of protons is equal to the atomic number.

When dealing with an element with no net charge, the atomic number = the number of protons and also the number of electrons. The atomic mass - the atomic number (number of protons and electrons) = the number of neutrons

Answer 2

-In order to calculate the number of neutrons, all you have to do is simply take the mass number (which is the number of electrons) around it if possible (less than 4 then leave that round and more than 4 round that by add one to the number), and take away to the atomic number (which is the number of protons and neutrons).

*Remember that the number of protons = number of electrons = atomic number, which mean they have the same number.*

-If want to write for the standard atomic notation, then you would have the mass number over the atomic number on the top left corner of the element symbol.

-If you want to draw a diagram for the atomic structure of the Bohr model, then you should know that you put the element symbol in the middle of the the first circle, and then put the electrons according to their number of protons or atomic number of the element, on the line of the circle.

-If you want to draw a diagram for the atomic structure of the Bohr-Rutherford model, then you should know that you put the number of protons using the atomic number and the number of neutrons (subtract the atomic number from the atomic mass) in the middle of the the first circle, and then put the electrons according to their number of protons or atomic number of the element, on the line of the circle.

*The first orbit/circle you have to have 2 protons or 2 electrons, then the second orbit/circle you have to have 8 protons or 8 electons, then the third orbit/circle you have to have 8 protons or 8 electons, and then you have to keep going according to the number of protons or the number of electrons with 8 protons or 8 electrons for the orbits or circles.*

Answer 3

You can get the number of neutrons of an element by taking the number of protons, the number of electrons, or the atomic number of the element (seeing as they are all the same number) and subtract that number from the atomic mass. This will give you the number of neutrons of an element.

EXAMPLE: THE ELEMENT -BERYLLIUM (Be)

Atomic number/Proton number/Electron number =4

Mass number= 9

To find neutron number: Mass number- Atomic number/Proton number/Electron number

That is : 9-4=5

And the number 5 would be your answer for the NEUTRON NUMBER.

Answer 4

The number of neutrons in an element= mass number- atomic number

Answer 5

To get the number of neutrons in an element you simply subtract the atomic mass from the atomic number.

atomic mass-atomic number

Answer 6

To find the number of neutrons you take the mass number and subtract the number of protons from it.

Answer 7

Nunber of neutrons = Mass number of an isotope- Number of protons