The chemical symbol of fermium is Fm; as a subscript in the isotopes symbols is atomic number.
The atoms of fermium have 100 protons each.
it's called a subscript
It is a superscript: Br+.
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 chemical symbol of fermium is Fm.
Fm
The fermium oxide is not known; the possible formula is Fm2O3.
Fm
The atoms of fermium have 100 protons each.
The element with chemical symbol Fm is Fermium. Fermium is a Actinide Transition Metal and has 100 electrons in total. It is synthesised and highly radioactive.
superscript 63 and subscript 152 Eu (the super and subscript go before the symbol with superscript on top of the subscript)
it's called a subscript
It is a superscript: Br+.
a subscript Number of atoms of that element in the molecule.
The subscript is the number of atoms in a molecule.
A symbol with no subscript has an implicit subscript of 1, meaning one atom of that element per formula unit. I'm not quite sure that's what you were asking.