Among them we may mention two remarkable red lines...  located at the extreme red end of the spectrum...  (which) led us to give this element the name Rubidium and the symbol Rb from Rubidus (Latin) which, with the ancients, served to designate the deepest red. Halogen element names have an -ine ending. Before a name and symbol are approved, an element may be referred to by its atomic number (e.g., element 120) or by its systematic element name. Lavoisier named the gas responsible for combustion oxygen, meaning acid forming, because all compounds containing oxygen seemed to be acidic. Vauquelin boiled pulverized crocoite with two parts potash obtaining a yellow solution. The second letter is lowercase. Color is one of the most powerful and obvious elements we have at our disposal. Included are color names for yellow, orange, red, pink, violet, blue, green, brown and gray colors. Bergman suggested the problem to his friend Carl Scheele (1742-1786 shown at right) who in 1774 reported three years of experiments on pyrolusite. Wollaston decomposed the excess mercurous cyanide in the remaining filtrate by adding muriatic acid and evaporated it to dryness. Believing that pyrolusite had removed phlogiston from muriatic acid, Scheele named this air dephlogisticated muriatic acid. When the IUPAC name is used, it is written in lowercase letters unless the name begins a sentence. Yes, some examples are: chlorine, bromine, praseodymium, chromium. Element symbols are one- or two-letter symbols. The exception to this rule is the name of helium, which predates the convention. The systematic element name is a temporary name that is based on the atomic number as a root and the -ium ending as a suffix. This is a list of the 118 chemical elements which have been identified as of 2020. Copy VBA code. Contents:  #17 Cl,  #24 Cr,  #55 Cs,  #53 I,  #49 In,  #77 Ir,  #45 Rh,  #37 Rb,  #81 Tl. P… Iodine was discovered by Bernard Courtois (1777-1838) who learned the manufacture of saltpeter from his father. He accompanied a Danish expedition to Mount Hekla which erupted in 1845 and measured geysers and hot springs in Iceland. Each word inside a name begins with an uppercase letter. For future googlers, FYI, the method in the answer by @meder , can be used with any element that has a name attribute, so lets say theres an