francium
Uranium
Sulfur
The elemnt frankium. This is a group 1 metal. It is highly radioactive.
In Chemistry it stands for Iron
AgBr is the chemical formula (not symbol) of silver bromide.
U is the atomic symbol for the element uranium.
In chemistry Po stands for Polonium
'N' is vhemicstry is the elemental symbol for Nitrogen .
Manganese Ferrite
In chemistry, this chemical compound, R-134A is the symbol for tetrafluoroethane. Tetrafluoroethane can be used as a solvent in organic chemistry.
The names and the symbols of the chemical elements are approved by IUPAC (International Union of Pure and Applied Chemistry) following a set of rules.
Fr is the symbol for the radioactive element francium.