usually a subscript denotes the number of atoms of a particular element within the formula. ie H2O (the 2 would be a subscript) indicates there are two atoms of hydrogen in one molecule of water.
The subscript in a chemical formula represents the amount of that atom in that compound's formula.
There is one atom of that element in the molecule.
The number representing the charge in an ion is not written in subscript in a chemical formula.
subscript
Not every chemical formula requires subscript. For example table salt is NaCl, sodium chloride. No subscript. But most chemical formulae do require subscript, such as water, H2O.
The subscript is mentioned only in a chemical formula.3 FeCl3 in a chemical reaction is not similar to Fe3O4 in a chemical formula.
The subscript in a chemical formula refers to the number of atoms of that element present in the molecule. It is a small number written at the lower right of the element symbol. For example, in the formula H2O, the subscript 2 indicates that there are two hydrogen atoms in each water molecule.
In a chemical formula, a subscript is a number written to the right and slightly below the symbol for the chemical element. If the subscript is 1, it is not written. The subscripts for the chemical formula for water, H2O, are 2 for hydrogen and 1 for oxygen. The subscripts for the chemical formula for glucose, C6H12O6, are 6 for carbon, 12 for hydrogen, and 6 for oxygen.
The subscript in a chemical formula represents the amount of that atom in that compound's formula.
It not only can change but really DOES change the formula.Changing the subscript in a chemical formula changes the number of atoms to which the particular subscript belongs. Doing this will change the formula completely, making it representative of another substance completely.
The chemical formula of dihydrogen oxide is H2O. This means that the subscript for hydrogen in this chemical expression is 2.
When balancing a chemical equation, you multiply the subscripts in a chemical formula times the coefficient in front of the formula to get the total number of atoms of each element.