There is a total of three atoms present in the water (H₂O) molecule.
<h3>What is an atom?</h3>
An atom is the smallest particle of an element that may or may not be capable of independent existence.
<h3>What is a molecule?</h3>
A molecule is the smallest particle of an element or compound that can exist freely.
<h3>What is a subscript?</h3>
Subscripts are the numbers that come below after a symbol. They tell you the number of atoms of an element. If there is no subscript then it is understood that the subscript is 1.
<h3>How to calculate the number of atoms in a molecule?</h3>
For calculating the number of atoms in a molecule, add the subscripts of that molecule, and you will get the total atoms of it.
For example, in molecule C₂H₅O, there are 2 carbon atoms, 5 hydrogen atoms, and 1 oxygen atom.
Add the subscripts
2 + 5 + 1 = 8
Hence, there is a total of 8 atoms in C₂H₅O.
For the H₂O molecule,
2 + 1 = 3
Hence, there is a total of 3 atoms present in one water molecule.
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