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A light metal is any metal of relatively low density. [1] These may be pure elements, but more commonly are metallic alloys. Lithium and then potassium are the two lightest metallic elements. Magnesium, aluminium and titanium alloys are light metals of significant commercial importance. [2]
It is the least dense of all elements that are solids at room temperature; the next lightest solid element (potassium, at 0.862 g/cm 3) is more than 60% denser. Apart from helium and hydrogen, as a solid it is less dense than any other element as a liquid, being only two-thirds as dense as liquid nitrogen (0.808 g/cm 3). [15]
In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period. It is the lightest element that has not yet been synthesized. An attempt to synthesize the element has been ongoing since 2018 in RIKEN in Japan.
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At high pressure formation of TcH 1.3 from elements was also reported. [33] TcCl 4 forms chain-like structures, similar to the behavior of several other metal tetrachlorides. The following binary (containing only two elements) technetium halides are known: TcF 6, TcF 5, TcCl 4, TcBr 4, TcBr 3, α-TcCl 3, β-TcCl 3, TcI 3, α-TcCl 2, and β-TcCl 2.
Lithium (Li) is the lightest metal and the least dense solid element. [8] In its non-ionized state it is one of the most reactive elements, and so is only ever found naturally in compounds. It is the heaviest primordial element forged in large quantities during the Big Bang. Beryllium (Be) has one of the highest melting points of all the light ...
It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H 2, sometimes called dihydrogen, [11] hydrogen gas, molecular hydrogen, or simply hydrogen. It is colorless, odorless, [12] non-toxic, and highly combustible.
Group 4 is the second group of transition metals in the periodic table. It contains only the four elements titanium (Ti), zirconium (Zr), hafnium (Hf), and rutherfordium (Rf). ). The group is also called the titanium group or titanium family after its lightest me