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The Elements" is a 1959 song with lyrics by musical humorist, mathematician and lecturer Tom Lehrer, which recites the names of all the chemical elements known at the time of writing, up to number 102, nobelium. Lehrer arranged the music of the song from the tune of the "Major-General's Song" from The Pirates of Penzance by Gilbert and Sullivan ...
Helium fusion first begins when a star leaves the red giant branch after accumulating sufficient helium in its core to ignite it. In stars around the mass of the Sun, this begins at the tip of the red giant branch with a helium flash from a degenerate helium core, and the star moves to the horizontal branch where it
After about 20 minutes, the universe had expanded and cooled to a point at which these high-energy collisions among nucleons ended, so only the fastest and simplest reactions occurred, leaving our universe containing hydrogen and helium. The rest is traces of other elements such as lithium and the hydrogen isotope deuterium. Nucleosynthesis in ...
An erbium-nickel alloy Er 3 Ni has an unusually high specific heat capacity at liquid-helium temperatures and is used in cryocoolers; a mixture of 65% Er 3 Co and 35% Er 0.9 Yb 0.1 Ni by volume improves the specific heat capacity even more. [49] [50] Erbium oxide has a pink color, and is sometimes used as a colorant for glass, cubic zirconia ...
Carbon comes from the Latin word carbo, meaning "charcoal". Silicon comes from the Latin word silex (or silicis), meaning "flint". Germanium comes from the Latin word Germania, the Latin name for Germany, which is the country where germanium was discovered. Stannum comes from the Latin word stannum, meaning "tin", from or related to Celtic staen.
A period 3 element is one of the chemical elements in the third row (or period) of the periodic table of the chemical elements.The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behavior of the elements as their atomic number increases: a new row is begun when chemical behavior begins to repeat, meaning that elements with similar behavior fall into ...
As it turned out, spallation could not generate much deuterium, but the new studies of spallation showed that this process could generate lithium, beryllium and boron; indeed, isotopes of these elements are over-represented in cosmic ray nuclei, as compared with solar atmospheres (whereas hydrogen and helium are present in about primordial ...
Atomicity is the total number of atoms present in a molecule of an element. For example, each molecule of oxygen (O 2) is composed of two oxygen atoms.Therefore, the atomicity of oxygen is 2.