there are two atoms in the molecule
The subscript 2 indicates that there are two oxygen atoms bonded together in the molecule of oxygen gas (O2).
The number of atoms of that element in the molecule
The number of atoms of the same element in the molecule
The answer is 'subscript'
The number of atoms of the same element in the molecule
The 2 indicates that there are 2 oxygen atoms.
It is called a subscript. For example: In the formula for water (H2O), 2 is the subscript indicating that there are 2 hydrogen atoms in the compound .
The number placed below an element's symbol in a chemical formula is called a subscript. Subscripts indicate the number of atoms of that element in a molecule.
Diatomic elements consist of two atoms.The formula of these elements are always written with a subscript 2 in its symbol to indicate its molecular composition.examples: H2,O2.
The letter or letters that represent an element are called its atomic symbol. The numbers appearing as subscripts in the chemical formula indicate the number of atoms of the element immediately before the subscript. If no subscript appears, one atom of that element is present.
a subscript
Ammonium Dichromate: (NH4)2Cr2O7. The subscript on Ammonium (NH4) is 2.