bohrium atomic mass

Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure.Thallium is a soft gray post-transition metal is not found free in nature. A freshly exposed surface of pure copper has a reddish-orange color. The relative atomic mass of Bohrium is 270 u. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral).Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids.Uranium is a silvery-white metal in the actinide series of the periodic table.

Tellurium is chemically related to selenium and sulfur. All of these but the unconfirmed Bh decay only through alpha decay, although some unknown bohrium isotopes are predict… Lead is widely used as a gamma shield. Bohrium is a chemical element with atomic number 107 which means there are 107 protons and 107 electrons in the atomic structure. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8.

It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. The chemical properties of this silvery gray, crystalline transition metal are intermediate between rhenium and manganese.Ruthenium is a rare transition metal belonging to the platinum group of the periodic table. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. Neptunium is the first transuranic element.Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized.Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas.Curium is a hard, dense, silvery metal with a relatively high melting point and boiling point for an actinide.Berkelium is a member of the actinide and transuranium element series.Californium is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye (after einsteinium). It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements.Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. It occurs on Earth as the decay product of various heavier elements. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years.

It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden.Thulium is an easily workable metal with a bright silvery-gray luster. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps.Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Approximately 60–70% of thallium production is used in the electronics industry.Lead is a heavy metal that is denser than most common materials. Gold is a transition metal and a group 11 element. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel.Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.Iron is a metal in the first transition series. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust.Sulfur is abundant, multivalent, and nonmetallic. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead.Francium is an alkali metal, that has one valence electron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.Nickel is a silvery-white lustrous metal with a slight golden tinge.

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