![]() ![]() So little of it has been produced, it's a matter of prediction, not empirical data. Even though it is in the same column or group of the periodic table with the other halogens, most scientists believe element 117 behaves more like a metalloid. The elements are arranged in order of increasing atomic number, with the lightest element (hydrogen: H) in the top left hand corner. Element 117, tennessine, might have some properties in common with the other elements. Fluorine, chlorine, bromine, iodine, and astatine definitely are halogens. Below the table to the right is a box labeled Color Code with different colors for metals, metalloids, and nonmetals, as well. The 18 columns are labeled Group and the 7 rows are labeled Period. The halogens are the only group of elements that include elements in all of the three main states of matter: gases, liquids, and solids.ĭepending on who you ask, there are either 5 or 6 halogens. 2: Elements in the periodic table are organized according to their properties.They commonly form ionic bonds with metals and covalent bonds with other nonmetals. The halogens are highly reactive nonmetallic elements.The halogen elements are fluorine, chlorine, bromine, iodine, astatine, and possibly tennessine.Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. This is the next-to-last column of elements on the righthand side of the table. Fluorine is a chemical element with atomic number 9 which means there are 9 protons in its nucleus. If the ion has a 1- charge (simply written with a minus superscript), then there are more electrons than the number of protons. Fluorine Atomic Data Atomic Number: 9 Symbol: F Atomic Weight: 18.998403 Discovery: Henri Moissan 1886 (France) Electron Configuration: He2s 2 2p 5 Word Origin: The name fluorine comes from the Latin and French fluere: flow or flux. The halogens are the elements in group 17 of the periodic table. Here are facts about this interesting element.
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