# Radon Protons Neutrons Electrons (And How to Find them?)

Radon has 86 protons, 136 neutrons and 86 electrons.

But how will you find the number of protons, neutrons and electrons in Radon (Rn)?

Well, it is very easy to find the protons, neutrons and electrons of radon atom.

Here I have given a very simple method for finding the protons, neutrons and electrons of radon atom.

Let’s dive right into it!

## Finding the Protons, Neutrons and Electrons in Radon

How to find protons?

• The number of protons can be found by knowing the atomic number of that atom. [1]

How to find neutrons?

• The number of neutrons can be found by subtracting the atomic number from its atomic mass.

How to find electrons?

• For a neutral atom, the number of electrons can be found by knowing the atomic number of that atom.

Let’s calculate the number of protons, neutrons and electrons in radon.

### #1 Number of Protons in Radon

If you have a periodic table with you, then most of the answers are in front of you.

You can see the elements, their atomic number and their atomic mass from the periodic table.

Now here our element is Radon (Rn).

So from the above periodic table, you can see that the atomic number of radon is 86.

As the atomic number of radon is 86, it has a total of 86 protons in its nucleus.

Thus, the number of protons in Radon is 86.

### #2 Number of Neutrons in Radon

In order to find the number of neutrons of radon atom, you should know its atomic mass first.

The number of neutrons in radon can be obtained by subtracting the atomic number from its atomic mass.

The atomic mass of radon is 222 u. [2]

So from this atomic mass (i.e 222), you have to subtract its atomic number (i.e 86).

So you will get 222 – 86 = 136.

Thus, the number of neutrons in Radon is 136.

### #3 Number of Electrons in Radon

For a neutral atom, the number of electrons and the number of protons are the same.

Here, the radon atom is a neutral atom.

So the number of electrons in radon is equal to its number of protons (which is also equal to its atomic number).

In the beginning, we have found that the number of protons in radon is 86.

Thus, the number of electrons in Radon is 86.

## Summary

• The number of protons can be found by knowing the atomic number of that atom.
• Number of Protons in Radon = Atomic number of Radon = 86

• The number of neutrons can be found by subtracting the atomic number from its atomic mass.
• Number of Neutrons in Radon = Atomic mass of Radon – Atomic number of Radon = 222 – 86 = 136