Group+17

​ ​Dakota K ​ **Group 17 of the Periodic Table** **Chlorine** Symbol: Cl Atomic Weight: 35.453 Melting Point: -101.5°C Freezing Point: -101.5°C Freezing Point: -101.5°C Boiling Point: -34.04°C Atomic Number: 17 Desity: 3.214 g/l State at Room Temperature: Gas History: Chlorine was produced first in 1774 by Carl Wilnelm Scheele, who collected the gas released by the reaction of maganese dioxide with the substance we now call hydrochloric acid. Uses: paper products, food, salt, paint, plastics, and textiles Isotopes:There are two stable isotopes, 35Cl (75.77%) and 37Cl (24.23%), Conductivity: It does not conduct electricity. Solubility: Yes, chlorine is soluble in water. Ductility: Chlorine is not ductile. Malleability: Chlorine is not malleable. Flammability: It is not flammable. Reactivity with oxygen: Wont react directly with oxygen. Electron Configuration: 3s2 3p5 Iodine

Symbol: I Atomic Weight: 126.90447 Melting Point: 113.7°C Freezing Point: 113.7°C Boiling Point: 184.3°C Atomic Number: 53 Density: 4.94 g/cm³ State at Room Temperature: Solid History: Iodine was discovered by Bernard Courtois in 1811. Uses: Weight loss, heart issues, cancer, skin tags, acne, nuclear protection, disinfecting cuts, water purification, food poisoning. Isotopes: There are 37 isotopes of Iodine (I) and only one, 127I, is stable. Conductivity: It will conduct in a liquid or molten state. Solubility: It is slightly soluble in water. Ductility: It is not ductile. Malleability: It is not malleable. Flammability: It is not flammable. Reactivity with oxygen: Does not react with oxygen. Electron Configuration: 4d¹⁰ 5s² 5p⁵ Fluorine​ ​

Symbol: F Atomic Weight: 18.9984032 Melting Point: -219.6°C Boiling Point: -188.12°C Atomic Number: 9 Density: 1.696 g/l

​ Astatine​ ​

Symbol: At Atomic Weight: 210 Melting Point: 302°C Boiling Point: 337°C Atomic Number: 85 Density: 7g/cm³ Bromine

Symbol: Br Atomic Weight: 79.904 Melting Point: -7.3°C Boiling Point: 59°C Atomic Weight: 35 Density: 3.12 g/cm³ State at Room Temperature: Liquid History: Bromine was discovered by two chemists Antoine Balaid and Carl Jacob Lowig in 1825 and 1826. Uses: Bromine is used in making fumigants, flameproofing agents, water purification compoundsm, dyes, medicines, sanitizers, etc. Isotopes: There ⁶⁷Br-⁹⁷Br Conductivity: Bromine only conducts electricity when bonded with another metal or element. Solubility: It is soluble in water to some extent Ductility: Bromine is not ductile. Malleability: Bromine is not malleable Electron Configuration: 4s2 3d10 4p5

Fun Fact​
 * ** The name bromine originates from the Greek word 'Bromos' meaning "stench". **
 * ** The name iodine originates from the Greek word Iodes meaning "violet". **
 * **The name chlorine originates from the Greek word 'khloros' meaning green referring to the color of the gas.**

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