Sagot :
There is a total of three atoms present in the water (H₂O) molecule.
What is an atom?
An atom is the smallest particle of an element that may or may not be capable of independent existence.
What is a molecule?
A molecule is the smallest particle of an element or compound that can exist freely.
What is a subscript?
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.
How to calculate the number of atoms in a molecule?
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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