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6 days ago · Niobium forms oxides in the oxidation states +5 (Nb 2 O 5), +4 (NbO 2), and the rarer oxidation state, +2 . Most common is the pentoxide, precursor to almost all niobium compounds and alloys. Niobates are generated by dissolving the pentoxide in basic hydroxide solutions or by melting it
5 days ago · Ferrous metal is a term that is used for any metal that has iron as its main component in its composition. There is a broad range of metals that fall into this category. Examples include: wrought iron, cast iron, steel, and stainless steel. These metals usually have good mechanical properties, like high strength and durability.
2 days ago · Unlike oxides of phosphorus and arsenic, these oxides are amphoteric, do not form well-defined oxoacids, and react with acids to form antimony salts. Antimonous acid Sb(OH) 3 is unknown, but the conjugate base sodium antimonite ([Na 3 SbO 3] 4) forms upon fusing sodium oxide and Sb 4 O 6. Transition metal antimonites are also known.
2 days ago · Note: There exists an intermediate form when the metal forms a metal oxide first. However, when the metal oxide is further made to react with water, the product formed will be a metal hydroxide. Reaction with Acids: Generally, metals react with acids to produce hydrogen in the following manner. \[\ce{Metal} \ + \ \ce{Acid}\ \rightarrow\ \ce ...
5 days ago · These attributes make them ideal candidates for electrochemical energy storage electrodes. 12 According to existing research reports, most of designed HEMs for metal-ion batteries are high-entropy oxides (HEOs), where metal cations are derived from a wide range of transition metal (TM) elements. By designing and combining a variety of metal ...
1 hour ago · At the metal and semiconductor interface, surface states, oxides, and contamination can establish barriers that hinder the movement of charge carriers. These surface effects directly contribute to the overall series resistance by obstructing the smooth flow of current by acting as traps.
1 day ago · Due to the high-temperature superconductivity of cuprate and the epoch-making discovery of the huge magnetoresistance of manganese ore, transition metal oxides have attracted renewed attention. 16–19 The influence of the electronic structure of the metal oxide interface on spin polarization is discussed, which provides a new method for optimizing the tunnel junction magnetoresistance. 20 ...
