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Antimony tetroxide is an inorganic compound with the formula Sb 2 O 4. This material, which exists as the mineral cervantite, [3] is white but reversibly yellows upon heating. The material, with empirical formula SbO 2, is called antimony tetroxide to signify the presence of two kinds of Sb centers. [4]
The hydrated oxide is insoluble in nitric acid, but dissolves in a concentrated potassium hydroxide solution to give potassium hexahydroxoantimonate(V), or KSb(OH) 6. [6] When heated to 700 °C (1,290 °F), the yellow hydrated pentoxide converts to an anhydrous white solid with the formula Sb 6 O 13, containing both antimony(III) and antimony(V).
SB Spina bifida: SBMD Sensory-based motor disorder: SBS Shaken baby syndrome: SC Sydenham chorea: SD Saint Vitus's dance (see Sydenham chorea) SDD Sensory discrimination disorder SDS Sudden death syndrome SHF Systolic heart failure: SIDS Sudden infant death syndrome: SIRS Systemic inflammatory response syndrome: SIS Shaken infant syndrome: SLE
All other isotopes have half-lives less than 4 days, most less than an hour. There are also many isomers , the longest-lived of which is 120m1 Sb with half-life 5.76 days. Except for beryllium , antimony is the lightest element observed to have isotopes capable of alpha decay ; 104 Sb is seen to undergo this mode of decay.
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Some examples of antimonates and their structures are shown below: Li 3 SbO 4 has a NaCl superstructure with isolated Sb 4 O 12− 16 units. [3]Sodium antimonate, NaSbO 3, has the ilmenite structure, with hexagonal close packed oxide ions with each ion, Na + and Sb 5+ occupying a third of the octahedral sites.
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