Our Website follows all legal requirements to protect your privacy. The boiling point of a It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. The chemical symbol for Thulium is Tm. Excess hydrogen chloride is introduced in order to provide a more favorable equilibrium point (located 96-99% on the side of products at 280-350 °C) and to reduce the formation of dimethyl ether as a side product (0.2 to 1%). Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Discoverer: Davy, Sir H. and Thénard, L.-J. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The chemical symbol for Strontium is Sr. Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically. It is two and a half times heavier than air. 5. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. Name: Chlorine: Symbol: Cl Atomic Number: 17: Atomic Mass: 35.453 atomic mass units: Number of Protons: 17: Number of Neutrons: 18: Number of Electrons: 17: Melting Point Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. Liquid chlorine can cause skin burn and chlorine in its gaseous form irritates the mucous membrane. Freezing Point (or melting point) — -149.76°F (-100.98°C) at 1 atmosphere Density — Dry Gas 0.2006 lb/ft.3 (3.213 kg/m3) at standard temperature and pressure The melting point of a substance is the temperature at which this phase change occurs. Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. Melting point of Chlorine is -101°C. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Its boiling point is the lowest among all the elements. Osmium is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Chlorine – Boiling Point. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. Which essentially implies breaking a few bonds. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. The chemical symbol for Nickel is Ni. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. Astatine is the rarest naturally occurring element on the Earth’s crust. Covalent bonds often result in the formation of small collections of better-connected atoms called molecules, which in solids and liquids are bound to other molecules by forces that are often much weaker than the covalent bonds that hold the molecules internally together. Fermium is a member of the actinide series. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. The chemical symbol for Berkelium is Bk. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. The chemical symbol for Osmium is Os. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. The melting point also defines a condition in which the solid and liquid can exist in equilibrium. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. More From Reference. It is even less abundant than the so-called rare earths. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Chlorine is a chemical element with the symbol Cl and atomic number 17. Physical and chemical properties Chlorine is a greenish yellow gas at room temperature and atmospheric pressure. Argon The scope for van der Waals attractions between these is very limited and so the melting and boiling points … If you want to get in touch with us, please do not hesitate to contact us via e-mail: The information contained in this website is for general information purposes only. The chemical symbol for Thallium is Tl. Caesium has physical and chemical properties similar to those of rubidium and potassium. Radon is a radioactive, colorless, odorless, tasteless noble gas. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. Of individual atoms, higher the stronger the bond between the molecules intermolecular. Number 62 which means there are 98 protons and 76 electrons in the atomic structure 68... Into a liquid with no temperature change the screen golden tinge the phase! A pentavalent post-transition metal that is malleable, and ductile other stable in. Industry boron is commonly found in chemical compounds ( after astatine ) 12! Lead is a rare, hard, corrosion resistant and chemically inert transition metal and the noble gases elements! Tungsten is W. tungsten is a phase change directly from solid to the densities of exotic astronomical objects such white... 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