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Bismuth Group

This element is usually classed with Sb by some writers among the metals, by others in the phosphorus group. We are led to class Bi in our third class, and in a group alone, because (1) while the so-called salts of Sb are not salts of the element, but of the radical (SbO), antimonyl, BI enters into saline combination, not only in the radical bismuthyl (BiO), but also as an element (2) while the compounds of the elements of the N group in which those elements are quinquivalent are, as a rule, more stable than those in which they are trivalent, Bi is trivalent in all its known [Pg.168]

Occurrence.—Occurs principally free, also as BijOa and BiiSi. [Pg.169]

Properties.—CrystalUzes in brilliant, metallic rhombohedra hard and brittle. [Pg.169]

It is only superficially oxidized in cold air. Heated to redness in air, it becomes coated with a yellow film of oxid. In HaO, containing COa, it forms a crystalline subearbonate. It combines directly with Cl, Br, and I. It dissolves in hot HaSOa as sulfate,. and in HNOa as nitrate. [Pg.169]

It is usually contaminated with As, from which it is best purified by heating to redness a mixture of powdered bismuth, potassium carbonate, soap and charcoal, nnder a layer of charcoal. After an hour the mass is cooled the button is separated and fused until its surface begins to be coated with a yellowish-brown oxid. [Pg.169]


A truly remarkable bismuth-sulfur compound was recently reported by Muller et al. (equation 63).205 The dark brown compound contains an anion which is essentially two S7 rings joined by a spiro bismuth atom, and two of these bismuth groups are joined by an S6 chain (73). This bismuth coordination polyhedron is a highly distorted square pyramid, the apex of which is the sulfur of the S6 chain, d(Bi—SapiCai) 2.683 A (av) and d(Bi—Seq) 2.817 A. [Pg.284]

Substituent effects of arsenic, antimony and bismuth groups 367... [Pg.62]


See other pages where Bismuth Group is mentioned: [Pg.238]    [Pg.238]    [Pg.238]    [Pg.279]    [Pg.282]    [Pg.284]    [Pg.515]    [Pg.87]    [Pg.88]    [Pg.92]    [Pg.168]    [Pg.2077]    [Pg.2077]    [Pg.2077]    [Pg.2118]    [Pg.2121]   


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