Fluorine, also called fluorin, is a chemical element originated from the Latin ‘fluere’, meaning to flow. It was first mentioned in 1810 and observed by A.-M. Ampère. The isolation was later accomplished and announced by H. Moissan. “F” is the canonical chemical symbol of fluorine. Its atomic number in the periodic table of elements is 9 with location at Period 2 and Group 17, belonging to the p-block. The relative atomic mass of fluorine is 18.9984032(5) Dalton, the number in the brackets indicating the uncertainty.
Aluminium, also called aluminum, is a chemical element originated from the Latin name for alum, ‘alumen’ meaningbitter salt. It was first mentioned in 1825 and observed by H.C.Ørsted. The isolation was later accomplished and announced by H.C.Ørsted. “Al” is the canonical chemical symbol of aluminium. Its atomic number in the periodic table of elements is 13 with location at Period 3 and Group 13, belonging to the p-block. The relative atomic mass of aluminium is 26.9815386(8) Dalton, the number in the brackets indicating the uncertainty.
