Zadanie 3a
Chromium(III) oxide, Cr2O3, is a hard ceramic used as an abrasive and as a wear-resistant coating. Outline the bonding in chromium(III) oxide and its electrical conductivity in the solid state. Use sections 9 and 17 of the data booklet.
The bonding triangle: ionic, covalent, metallic
Describe bonding as a continuum between ionic, covalent and metallic models rather than three separate categories, represent it on the bonding triangle, and use the appropriate bonding model to explain the properties of a given material.
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Zadanie 9
Which compound has bonding that is best described as predominantly ionic? Use sections 9 and 17 of the data booklet. A. NO2 B. ICl C. BaO D. SiH4