What are the properties of Group 1 elements (alkali metals)?

a group in the periodic table consisting of six chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and the radioactive elements Mar 11, 2025 ... These elements share several common characteristics: They have seven valence electrons in their outermost electron shell, which makes them ... Also known as High-Intensity Discharge (HID) lamps, xenon headlights deliver a white-blue light, approximately two to three times brighter than a halogen, last ... Reactive gases containing the halogens chlorine and bromine lead to the chemical destruction of stratospheric ozone. Halogen-containing gases present in the ... Chlorine is the major naturally-ocurring halogen in the atmosphere, mostly being present as chloride. The gas chlorine is potentially very hazardous but it is ... Key Facts & Summary · Halogen have very high electronegativities · They have seven valence electrons (one short of a stable octet) · They are highly reactive, ... Both incandescent and halogen light bulbs feature a pure and high-quality light spectrum and are what we lovingly call analog light sources. Halogens are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid and Iodine and astatine are solids. Halogens are very ... Examples of clinically relevant halogens are bromine and iodine, and when these are part of compounds, such as medications, they are called bromides and iodides ... The elements fluorine, chlorine, bromine, iodine, and astatine form a group or family in the Periodic Table known as the halogens (salt formers).