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

Indium has 49 protons, 66 neutrons and 49 electrons.

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

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

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

Let’s dive right into it!

Finding the Protons, Neutrons and Electrons in Indium

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 indium.

#1 Number of Protons in Indium

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 Indium (In).

So from the above periodic table, you can see that the atomic number of indium is 49.

As the atomic number of indium is 49, it has a total of 49 protons in its nucleus.

Thus, the number of protons in Indium is 49.

#2 Number of Neutrons in Indium

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

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

The atomic mass of indium is 114.82 u (which you can round it to 115). ^[2]

So from this atomic mass (i.e 115), you have to subtract its atomic number (i.e 49).

So you will get 115 – 49 = 66.

Thus, the number of neutrons in Indium is 66.

#3 Number of Electrons in Indium

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

Here, the indium atom is a neutral atom.

So the number of electrons in indium 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 indium is 49.

Thus, the number of electrons in Indium is 49.

Summary

Number of Protons in Indium

• The number of protons can be found by knowing the atomic number of that atom.
• Number of Protons in Indium = Atomic number of Indium = 49

Number of Neutrons in Indium

• The number of neutrons can be found by subtracting the atomic number from its atomic mass.
• Number of Neutrons in Indium = Atomic mass of Indium – Atomic number of Indium = 115 – 49 = 66

Number of Electrons in Indium

• For a neutral atom, the number of electrons can be found by knowing the atomic number of that atom.
• Number of Electrons in Indium = Atomic number of Indium = 49

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

Check out related topics for more practice;
Tin protons neutrons electrons
Iodine protons neutrons electrons
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Thallium protons neutrons electrons
Lead protons neutrons electrons