or there is one of that kind of element or compound!
The chemical symbol of fermium is Fm; as a subscript in the isotopes symbols is atomic number.
superscript 63 and subscript 152 Eu (the super and subscript go before the symbol with superscript on top of the subscript)
The symbol for oxygen, O, does not have a subscript because oxygen is typically found as a diatomic molecule (O2) in nature. The subscript 2 is understood to represent the number of oxygen atoms bonded together.
The subscript "4" in the symbol He indicates that helium has an atomic number of 2, meaning it has 2 protons in its nucleus. The atomic number is represented by the bottom number in the symbol.
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.
The subscript is the number of atoms in a molecule.
The subscript 4 should be written to the right of the symbol for fluorine in the compound dinitrogen tetrafluoride, which is N2F4.
The number placed below an element symbol in a chemical formula is called a subscript because it indicates the number of atoms of that element in a molecule or compound. The subscript is written slightly below the element symbol to differentiate it from the coefficient, which applies to the whole molecule or compound.
a subscript Number of atoms of that element in the molecule.
The subscript that is to the right of the element symbol, no subscript means 1. Example H2O, 2 hydrogen 1 oxygen
The symbols in a chemical formula represent the elements present in the compound. A zero atom, or no atom, is denoted by omitting the element symbol from the formula. A subscript of 1 is not usually written in a chemical formula as it is implied. If there are more than one atom of an element, the number of atoms is indicated by a subscript after the element symbol.
One (1).