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Four allotropes (structural forms) of solid manganese are known, labeled α, β, γ and δ, and occurring at successively higher temperatures. All are metallic, stable at standard pressure, and have a cubic crystal lattice, but they vary widely in their atomic structures. [18] [19] [20] Alpha manganese (α-Mn) is the equilibrium phase at room ...
Atomicity may vary in different allotropes of the same ... while its atomic weight is 15.879; [4] therefore, its atomicity is ... Manganese (Mn) 1 26 Iron (Fe) 1 27 ...
Naturally occurring manganese (25 Mn) is composed of one stable isotope, 55 Mn. Twenty-seven radioisotopes have been characterized, with the most stable being 53 Mn with a half-life of 3.7 million years, 54 Mn with a half-life of 312.3 days, and 52 Mn with a half-life of 5.591 days.
Main isotopes of manganese; Main isotopes [1] Decay; abundance ... Allotropes Group Period Block Natural occurrence ... dm1–4= can be entered as keyboard code:
{{Infobox element}}; labels & notes: (Image) GENERAL PROPERTIES Name Symbol Pronunciation (data central) Alternative name(s) Allotropes Appearance <element> IN THE PERIODIC TABLE Periodic table Atomic number Standard atomic weight (data central) Element category (also header bg color) (sets header bg color, over 'series='-color) Group Period ...
Manganese forms a variety of oxides: MnO, Mn 3 O 4, Mn 2 O 3, MnO 2, MnO 3 and Mn 2 O 7. Manganese(II) oxide is an inorganic compound that forms green crystals. Like many monoxides, MnO adopts the rock salt structure, where cations and anions are both octahedrally coordinated.
Manganese-73; This page was last edited on 29 March 2013, at 21:30 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
Manganese(II,III) oxide is the chemical compound with formula Mn 3 O 4. Manganese is present in two oxidation states +2 and +3 and the formula is sometimes written as MnO · Mn 2 O 3 . Mn 3 O 4 is found in nature as the mineral hausmannite .