what are the physical and chemical properties of helium
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Helium Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. Its boiling and melting points are the lowest among all the elements. Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined.
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What are the physical properties of Halogens? They are found in all three states of existence. Here are some other physical properties of halogens that make them a very unique family of elements. Appearance Appearance wise fluorine exists as a pale yellow gas that is poisonous in nature, while chlorine is similarly poisonous but exists as a pale green colored gas.alogens range from solid (I2) to liquid (Br2) to gaseous (F2 and Cl2) at room temperature. The chemical properties are more uniform. The halogens have very high electronegativities. Fluorine has the highest electronegativity of all elements.
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Helium Facts Properties: Helium is a very light, inert, colorless gas. Helium has the lowest melting point of any element. It is the only liquid that cannot be solidified by lowering the temperature. It remains liquid down to absolute zero at ordinary pressures, but can be solidified by increasing the pressure.ources: Except for hydrogen, helium is the most abundant element in the universe. It is an important component in the proton-proton reaction and the carbon cycle, which account for the energy of the sun and stars. Helium is extracted from natural gas.
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- However, gas density and thermalconductivitysigniﬁcantlydifferatvaryingoxygen concentrations with heliox. Thus,helium, with its lower gas density andincreased heat-carrying capability, re-sults in imprecise pressure and tempera-ture changes, and, subsequently, falsetidal volume measurements.
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- Gaseous chemical element, symbol: He, atomic number: 2 and atomic weight 4,0026 g/mol. Helium is one of the noble gases of group O in the periodic table.
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- The element helium is an inert or noble gas, and is found on the periodic table with the other inert gases in Group 18. They're the elements down the far right column of the table. Helium, which is the second most abundant element in the universe (behind hydrogen) is about a quarter of all matter.It is a gas here on earth, and can only be liquefied if it is cooled to near absolute zero. It will not solidify, by the way. Outside earth, it is mostly found in stars where it is a plasma.elium is an element, featuring on the Periodic Table of the elements. Helium was first discovered in the sun spectroscopically. It get its name from the Greek word, Helios, meaning the sun.
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Fluorine Facts Fluorine Chemical & Physical Properties. The element fluorine is a greenish yellow gas. This a simulant, showing how fluorine appears (though the actual gas would be less intensely colored in small volumes). The real element would corrode even borosilicate glass.
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Structure & Bonding Helium is unique since its valence shell consists of a single s-orbital. The other members of group 8 have a characteristic valence shell electron octet (ns2 + npx2 + npy2 + npz2). This group of inert (or noble) gases also includes krypton (Kr: 4s2, 4p6), xenon (Xe: 5s2, 5p6) and radon (Rn: 6s2, 6p6). In the periodic table above these elements are colored beige.
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Helium Properties Facts and Info about Helium Properties This article on Helium properties provide facts and information about the physical and chemical properties of Helium which are useful as homework help for chemistry students.
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Helium: A byproduct of the natural gas industry Helium is an inert gas. The only gas with a lower reactivity is neon. This low reactivity makes helium a valuable gas to use in manufacturing and repair processes when an inert atmosphere is required. Helium also has the second lowest density of any gas along with a very high thermal conductivity.These properties of helium gas make it the atmosphere of choice for many metallurgical processes, growing perfect crystals in chemical vapors, manufacturing optical fibers and other uses.Helium has a very low viscosity, a high diffusion coefficient and the smallest atom of any element.hese properties of helium gas make it the atmosphere of choice for many metallurgical processes, growing perfect crystals in chemical vapors, manufacturing optical fibers and other uses. Helium has a very low viscosity, a high diffusion coefficient and the smallest atom of any element.
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Hundreds Of California Government Employees Are Paid Over $400,000 A Year Thousands of UC and California State University employees made over $200,000 in 2012, excluding benefits. From the state’s top positions to those at the bottom, Transparent California makes it easy for citizens to find inflated salaries and benefits for many public employees. A Monterey County Secretary made over $146,000. An Alameda County sheriff took home over $541,000.
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- The element helium is an inert or noble gas, and is found on the periodic table with the other inert gases in Group 18. They're the elements down the far right column of the table. Helium, which is the second most abundant element in the universe (behind hydrogen) is about a quarter of all matter.It is a gas here on earth, and can only be liquefied if it is cooled to near absolute zero. It will not solidify, by the way. Outside earth, it is mostly found in stars where it is a plasma.We know that helium, which is colorless, odorless and tasteless, does not want to chemically combine with any other atoms. It has a valence of zero, and it is found on earth as a monatomic gas, hanging around as single atoms.elium, which is the second most abundant element in the universe (behind hydrogen) is about a quarter of all matter. It is a gas here on earth, and can only be liquefied if it is cooled to near absolute zero. It will not solidify, by the way.
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- Properties and Isotopes. Helium is less dense than any other known gas except hydrogen and is about one seventh as dense as air. Extremely unreactive, it is an inert gas in Group 18 of the periodic table.Natural helium is a mixture of two stable isotopes, helium-3 and helium-4.roperties and Isotopes. Helium is less dense than any other known gas except hydrogen and is about one seventh as dense as air. Extremely unreactive, it is an inert gas in Group 18 of the periodic table.
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Helium: the essentials Helium is one of the so-called noble gases. Helium gas is an unreactive, colourless, and odourless monoatomic gas. Helium is available in pressurised tanks. Helium is the second most abundant element in the universe after hydrogen.α-particles are doubly ionised helium atoms, He 2+ .elium is one of the so-called noble gases. Helium gas is an unreactive, colourless, and odourless monoatomic gas. Helium is available in pressurised tanks. Helium is the second most abundant element in the universe after hydrogen. α-particles are doubly ionised helium atoms, He 2+ .
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- Gas Physical Properties. Acetylene ; Air ; Ammonia; Argon; Arsine; Boron Trichloride; Boron Trifluoride; Butane; Carbon Dioxide; Carbon Monoxide; Chlorine; Deuterium; Diborane; Dichlorosilane; Disilane; Ethane; Ethyl Chloride; Ethylene; Fluorine; Halocarbon-116; Halocarbon-23; Helium; Hydrogen; Hydrogen Chloride; Hydrogen Fluoride; Hydrogen Sulfide; Krypton; Methane; Neon; Nitrogen; Nitrogen Trifluoride
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- Physical Properties of Rutherfordium. Atomic Mass Average: 261; Boiling Point: 5800K; Coefficient of lineal thermal expansion/K-1: N/A; Conductivity Electrical: Thermal: 0.23 W/cmK; Description: A man made radioactive element and the first transactinide element. Flammablity Class: Freezing Point: see melting point; Heat of Vaporization: kJ/mol; Melting Point: 2400K
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Specific Heat of the elements Notes on the Specific Heat of particular elements: Hydrogen: Value given for gas phase of H . 2 Helium: Value given for gas phase. Lithium: Value given for solid phase. Beryllium: Value given for solid phase. Boron: Value given for solid rhombic form. Carbon: Value given for solid graphite form.
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Helium Properties It is a colorless, odorless inert gaseous element occurring in natural gas and with radioactive ores. It is less soluble in water than any other gas. The Physical and Chemical Properties are the characteristics of a substance, like Helium, which distinguishes it from any other substance. Most common substances exist as States of Matter as solids, liquids, gases and plasma.
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Periodic Elements Helium is the chemical element with atomic number 2 and an atomic weight of 4.002602, which is represented by the symbol He. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. 3. Li.
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Argon Argon has several desirable properties: 1  Argon is a chemically inert gas. 2  Argon is the cheapest alternative when nitrogen is not sufficiently inert. 3  Argon has low thermal conductivity. 4  Argon has electronic properties (ionization and/or the emission spectrum) desirable for some applications.
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- Characteristics: Helium is a light, odorless, colorless, inert, monatomic gas. It can form diatomic molecules, but only weakly and at temperatures close to absolute zero. Helium has the lowest melting point of any element and its boiling point is close to absolute zero.
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- Some elements on the periodic table are oxygen, helium, arsenic and fluorine. Oxygen is an odorless, tasteless and colorless gas at room temperature, but is bright blue as a liquid. Oxygen is a very reactive element and is paramagnetic, which means it has unpaired electrons. Full Answer >.
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10 Helium Facts 1 Helium is the second-lightest element. 2  Helium is the second-most abundant element in the universe, though it is much less common on Earth. 3  Helium is colorless, odorless, tasteless, non-toxic, and inert. 4  Most helium is obtained by extracting it from natural gas. 5  Helium is the second-least reactive noble gas (after neon).
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Noble Gases Properties, Uses and Sources The noble gases are helium, neon, argon, krypton, xenon, radon, and ununoctium. Noble Gas Properties. The noble gases are relatively nonreactive. This is because they have a complete valence shell. They have little tendency to gain or lose electrons.
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What is Metallic Hydrogen? 1 Liquid metallic hydrogen: Helium is a liquid at normal pressure and temperatures near absolute zero, a result of its high zero-point energy (ZPE), the lowest possible energy.
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Physical and Chemical Properties of Argon Physical and Chemical Properties of Argon. Argon is the most abundant on Earth occurring noble gas, the proportion of the atmosphere is about 0.934%. This argon is the third most common component of air, the nitrogen and oxygen. Argon was the first noble gas, which - after the discovery of helium in the solar spectrum - has been discovered on Earth.