It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements.

Major advantage of lead shield is in its compactness due to its higher density. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars.

Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. Europium is one of the least abundant elements in the universe. The chemical symbol for Indium is In.

94.905 8374(8) 0.158 73(30) 96 Mo… In fact their absorption cross-sections are the highest among all stable isotopes. Molybdenum is a valuable alloying agent, as it contributes to the hardenability and toughness of quenched and tempered steels. This question is for testing whether or not you are a human visitor and to prevent automated spam submissions. 1.8. 42.

The chemical symbol for Chlorine is Cl. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. 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. Lead is widely used as a gamma shield. It has a high elastic modulus, and only tungsten and tantalum, of the more readily available metals, have higher melting points. The chemical properties of this silvery gray, crystalline transition metal are intermediate between rhenium and manganese.

›› More information on molar mass and molecular weight. Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. Recalculation of their measurements based on current values of Ar (Ag) and Ar (Cl) gives Ar (Mo) = 95.939. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical … Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Unstable isotopes decay through various radioactive decay pathways, most commonly alpha decay, beta decay, gamma decay or electron capture. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium.

Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure.
The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. The metal has found recent application as electrodes for electrically heated glass furnaces and foreheaths. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure.

The chemical symbol for Zirconium is Zr. 2) You may not distribute or commercially exploit the content, especially on another website. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Tungsten is an intrinsically brittle and hard material, making it difficult to work. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron.
Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). al. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. So 1 u is 1/12 of the mass of a carbon-12 isotope: 1 u = 1 Da = m(12 C)/12 Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. Enter a chemical formula: Browse the list of common chemical compounds.

The chemical symbol for Zirconium is Zr. It is even less abundant than the so-called rare earths. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. The chemical symbol for Promethium is Pm. The chemical symbol for Neptunium is Np.

Among 92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98Mo, and 100Mo are seven naturally occurring isotopes.

Thorium is moderately hard, malleable, and has a high melting point. Astatine is the rarest naturally occurring element on the Earth’s crust. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. Neptunium is the first transuranic element. Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. What is Conservation of Atomic Number, Neutron Number and Mass Number - Definition, Actinium - Mass Number - Neutron Number - Ac, Niobium – Mass Number – Neutron Number – Nb, Technetium – Mass Number – Neutron Number – Tc. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. The chemical symbol for Erbium is Er. It can be observed from the chart that there are more neutrons than protons in nuclides with Z greater than about 20 (Calcium).

In nuclear reactors, promethium equilibrium exists in power operation. 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). The chemical symbol for Lanthanum is La. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. The chemical symbol for Silicon is Si. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. 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 Thallium is Tl. The chemical symbol for Uranium is U. It is fairly soft and slowly tarnishes in air. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure.

Tellurium is chemically related to selenium and sulfur. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. The chemical symbol for Silver is Ag.

Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature.


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