In fact, chlorine was used as a war gas in 1915.Įxposure to chlorine should not exceed 0.5 ppm (8-hour time-weighted average - 40 hour week). As little as 3.5 ppm can be detected as an odor, and 1000 ppm is likely to be fatal after a few deep breaths. The gas irritates the mucus membranes and the liquid burns the skin. The density of a substance strongly depends on its atomic mass and also on the atomic number density. Name: Chlorine Symbol: Cl Atomic Number: 17 Atomic Mass: 35.4527 amu Melting Point: -100.98 ☌ (172.17 K, -149.764 ☏) Boiling Point: -34.6 ☌ (238.55 K, -30.279997 ☏) Number of Protons/Electrons: 17 Number of Neutrons: 18 Classification: Halogen Crystal Structure: Orthorhombic Density 293 K: 3. HandlingĬhlorine is a respiratory irritant. The Chlorine atomic mass is the mass of an atom. Organic chemistry demands much from chlorine, both as an oxidizing agent and in substitution, since it often brings many desired properties in an organic compound when substituted for hydrogen, as in one form of synthetic rubber. Further use is in the manufacture of chlorates, chloroform, carbon tetrachloride, and in the extraction of bromine. Chlorine has an electronic configuration of 2,8,7 and the atomic number is 17. Most of the chlorine produced is used in the manufacture of chlorinated compounds for sanitation, pulp bleaching, disinfectants, and textile processing. In this video we'll use the Periodic table and a few simple rules to find the protons, electrons, and neutrons for the element Chlorine (Cl). It has one electron in its valence shell. It is also extensively used in the production of paper products, dyestuffs, textiles, petroleum products, medicines, antiseptics, insecticides, food, solvents, paints, plastics, and many other consumer products. Even the smallest water supplies are now usually chlorinated. It is used for producing safe drinking water the world over. UsesĬhlorine is widely used in making many everyday products. It is characterized as a greenish-yellow gas with a pungent odor, and exposure occurs by inhalation, ingestion, or contact. Chlorine is used in many industrial processes, as well as in pesticides, pharmaceuticals, and water purification. At 10☌ one volume of water dissolves 3.10 volumes of chlorine, at 30☌ only 1.77 volumes. Chlorine is a naturally occurring halogen element with atomic symbol Cl, atomic number 17, and atomic mass 35.453. It is a member of the halogen (salt-forming) group of elements and is obtained from chlorides by the action of oxidizing agents and more often by electrolysis it is a greenish-yellow gas, combining directly with nearly all elements. In nature it is found in the combined state only, chiefly with sodium as common salt (NaCl), carnallite, and sylvite. Chlorine was named in 1810 by Davy, who insisted it was an element. Discovered in 1774 by Scheele, who thought it contained oxygen. This chemical, when used in small doses, has no side effects in large doses, however, it is fatal.ħ, 6, 5, 4, 3, 2, 1, −1 (a strongly acidic oxide)įrom the Greek word chloro, greenish yellow. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and seven in shell three.Some tree frogs contain a chlorine compound in their skin that is a very powerful pain killer. That means there are 17 electrons in a chlorine atom. for the element of CHLORINE, you already know that the atomic number tells you the number of electrons. Total number of protons in the nucleus is called the. Element Chlorine (Cl), Group 17, Atomic Number 17, p-block, Mass 35.45. Chlorine is a chemical element with atomic number 17 which means there are 17 protons in its nucleus. Once one shell is full, the next electron that is added has to move to the next shell. Chlorine - Element information, properties and uses Periodic Table. As you learn about elements with more than eighteen electrons you will find that shell three can hold more than eight. Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell three can hold a maximum of eight electrons. The electrons like to be in separate shells/orbitals. Write the ground-state electronic configuration for chlorine (atomic number 17), bromine (atomic number 35), and iodine (atomic number 53). There are two stable isotopes, 35 Cl (75.77) and 37 Cl (24. The pure chemical element has the physical form of a diatomic green gas. In an atom, the electrons spin around the center, also called the nucleus. Chlorine ( 17 Cl) has 25 isotopes, ranging from 28 Cl to 52 Cl, and two isomers, 34m Cl and 38m Cl. Chlorine was given its name in 1810 by Humphry Davy, who insisted that it was in fact an element. Each of those colored balls is an electron. In the next section we're going to cover electron orbitals or electron shells. It tells you the mass of one atom, how many pieces are inside, and where it should be placed on the periodic table. That box on the left has all of the information you need to know about one element.
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