Search results
Results From The WOW.Com Content Network
Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Aluminium oxide (Al 2 O 3) is an example of an amphoteric oxide. Amphoterism depends on the oxidation states of the oxide. Amphoteric oxides include lead(II) oxide and zinc oxide, among many others. [5]
A basic oxide, also called a base anhydride (meaning "base without water"), is usually formed in the reaction of oxygen with metals, especially alkali (group 1) and alkaline earth (group 2) metals. Both of these groups form ionic oxides that dissolve in water to form basic solutions of the corresponding metal hydroxide: Alkali metals (Group 1)
Less electronegative elements tend to form basic oxides such as sodium oxide and magnesium oxide, whereas more electronegative elements tend to produce acidic oxides as seen with carbon dioxide and phosphorus pentoxide. Some oxides like aluminium oxides are amphoteric while some oxides may be basic. [3] Acidic oxides are of environmental concern.
The chemical elements can be broadly divided into metals, metalloids, and nonmetals according to their shared physical and chemical properties.All elemental metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metallic elements; and have at least one basic oxide.
It bonds covalently in most of its compounds, [104] has an amphoteric oxide; [105] and can form anionic gallates. [58] Gallium forms Zintl phases such as Li 2 Ga 7, K 3 Ga 13 and YbGa 2. [106] It is slowly oxidized in moist air at ambient conditions; a protective film of oxide prevents further corrosion. [107]
V 2 O 5 is an amphoteric oxide, and unlike most transition metal oxides, it is slightly water soluble, giving a pale yellow, acidic solution. Thus V 2 O 5 reacts with strong non-reducing acids to form solutions containing the pale yellow salts containing dioxovanadium(V) centers: V 2 O 5 + 2 HNO 3 → 2 VO 2 (NO 3) + H 2 O
Chromium(III) oxide is a precursor to the magnetic pigment chromium dioxide, by the following reaction: [8] Cr 2 O 3 + 3 CrO 3 → 5 CrO 2 + O 2. Along with many other oxides, it is used as a compound when polishing (also called stropping) the edges of knives, razors, surfaces of optical devices etc. on a piece of leather, balsa, cloth or other ...
Pages in category "Amphoteric compounds" The following 11 pages are in this category, out of 11 total. ... Lead(II) oxide; T. Tin(II) oxide; U. Uranium trioxide; W.