Iodine Protons Neutrons Electrons (And How to Find them?)

Iodine has 53 protons, 74 neutrons and 53 electrons.

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

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

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

Let’s dive right into it!

Finding the Protons, Neutrons and Electrons in Iodine

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 iodine.

If you don’t want to read, then you can also watch this video.

#1 Number of Protons in Iodine

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 Iodine (I).

So from the above periodic table, you can see that the atomic number of iodine is 53.

As the atomic number of iodine is 53, it has a total of 53 protons in its nucleus.

Thus, the number of protons in Iodine is 53.

#2 Number of Neutrons in Iodine

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

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

The atomic mass of iodine is 126.90 u (which you can round it to 127). ^[2]

So from this atomic mass (i.e 127), you have to subtract its atomic number (i.e 53).

So you will get 127 – 53 = 74.

Thus, the number of neutrons in Iodine is 74.

#3 Number of Electrons in Iodine

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

Here, the iodine atom is a neutral atom.

So the number of electrons in iodine 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 iodine is 53.

Thus, the number of electrons in Iodine is 53.

Summary

Number of Protons in Iodine

• The number of protons can be found by knowing the atomic number of that atom.
• Number of Protons in Iodine = Atomic number of Iodine = 53

Number of Neutrons in Iodine

• The number of neutrons can be found by subtracting the atomic number from its atomic mass.
• Number of Neutrons in Iodine = Atomic mass of Iodine – Atomic number of Iodine = 127 – 53 = 74

Number of Electrons in Iodine

• For a neutral atom, the number of electrons can be found by knowing the atomic number of that atom.
• Number of Electrons in Iodine = Atomic number of Iodine = 53

I hope you have understood the simple method for finding the protons, neutrons and electrons of iodine atom.

Check out related topics for more practice;
Xenon protons neutrons electrons
Thallium protons neutrons electrons
Lead protons neutrons electrons
Bismuth protons neutrons electrons
Radon protons neutrons electrons