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Lead(IV) oxide, commonly known as lead dioxide, is an inorganic compound with the chemical formula PbO 2. It is an oxide where lead is in an oxidation state of +4. [1] It is a dark-brown solid which is insoluble in water. [2] It exists in two crystalline forms.
Lead oxides are a group of inorganic compounds with formulas including lead (Pb) and oxygen (O). Common lead oxides include: Lead(II) oxide, PbO, litharge (red), massicot (yellow) Lead tetroxide or red lead, Pb 3 O 4, minium, which is a lead (II,IV) oxide and may be thought of as lead(II) orthoplumbate(IV) [Pb 2+] 2 [PbO 4− 4], vivid orange ...
Hydrogen compounds are compounds containing the element hydrogen. In these compounds, hydrogen can form in the +1 and -1 oxidation states. Hydrogen can form compounds both ionically and in covalent substances. It is a part of many organic compounds such as hydrocarbons as well as water and other organic substances.
The compounds are almost insoluble in water, weak acids, and (NH 4) 2 S/(NH 4) 2 S 2 solution is the key for separation of lead from analytical groups I to III elements, tin, arsenic, and antimony. The compounds dissolve in nitric and hydrochloric acids, to give elemental sulfur and hydrogen sulfide, respectively. [7]
It is the traditional term for the IUPAC name plumbate(II). For example, lead(II) oxide (PbO) dissolves in alkali to form salts containing the HPbO − 2 anion (hydrogen plumbite): [1] PbO + OH − → HPbO − 2. Lead(II) hydroxide also dissolves in excess alkali to form the [Pb(OH) 6] 4− anion (hexahydroxyplumbate(II)): [2] Pb(OH) 2 + 4 OH ...
Hydrogen bromide – HBr; Hydrogen chloride – HCl; Hydrogen cyanide – HCN; Hydrogen fluoride – HF; Hydrogen peroxide – H 2 O 2; Hydrogen selenide – H 2 Se; Hydrogen sulfide – H 2 S; Hydrogen telluride – H 2 Te; Hydroxylamine – NH 2 OH; Hypobromous acid – HBrO; Hypochlorous acid – HClO; Hypophosphorous acid – H 3 PO 2 ...
Lead(II) oxide, also called lead monoxide, is the inorganic compound with the molecular formula Pb O.It occurs in two polymorphs: litharge having a tetragonal crystal structure, and massicot having an orthorhombic crystal structure.
Some lead compounds are extremely toxic. Long-term exposure to even tiny amounts of these compounds can cause brain and kidney damage, hearing impairment, and learning problems in children. [ 35 ] The auto industry uses over 1,000,000 metric tons (980,000 long tons; 1,100,000 short tons) of lead every year, with 90% going to conventional lead ...