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The solid has a sharp melting point and has a crystalline structure, but it is highly compressible; applying pressure in a laboratory can decrease its volume by more than 30%. [107] With a bulk modulus of about 27 MPa [108] it is ~100 times more compressible than water.
Helium is a colourless, odourless gas that is totally unreactive and has no biological role. It has a melting point of unknown and a boiling point of −268.928°C, and is abundant in the universe but rare on Earth.
Helium is a colorless, odorless, nonmetallic gas with the lowest boiling point of all elements. It has a melting point of 4.222 K and a critical pressure of 0.22746 MPa.
17 lis 2020 · Melting point of Helium is -272.2°C. Note that, these points are associated with the standard atmospheric pressure. In general, melting is a phase change of a substance from the solid to the liquid phase.
Index Periodic Table Chemistry concepts. HyperPhysics. R Nave. Go Back. Helium is the lightest noble gas with two electrons filling the 1s state to close the first shell. It is the second most abundant element in the universe, following hydrogen. The hydrogen-helium abundance ratio is an important clue to the cosmological process.
Learn about the melting point, boiling point, thermal conductivity and expansion of helium, a colorless, odorless, inert gas. Compare the thermal properties of helium with other elements and see the periodic table.
Helium is a noble gas with atomic number 2 and atomic weight 4.002602. It has a melting point of -268.93°C and is abundant in the universe and natural gas.
