ferric charge
91astatine — /as teuh teen tin/, n. Chem. a rare element of the halogen family. Symbol: At; at. no.: 85. [1945 50; < Gk ástat(os) not steadfast, unstable (see ASTATIC) + INE2] * * * ▪ chemical element Introduction radioactive chemical element and the… …
92silica mineral — Any of the forms of silicon dioxide (SiO2), including quartz, tridymite, cristobalite, coesite, stishovite, melanophlogite, lechatelierite, and chalcedony. Various kinds of silica minerals have been produced synthetically. * * * Introduction… …
93Chemistry: A Volatile History — is a 2010 BBC documentary on the history of chemistry presented by Jim Al Khalili. It was nominated for the 2010 British Academy Television Awards in the category Specialist Factual. Contents 1 Episode 1 – Discovering the Elements 1.1… …
94Friedel–Crafts reaction — The Friedel–Crafts reactions are a set of reactions developed by Charles Friedel and James Crafts in 1877.[1] There are two main types of Friedel–Crafts reactions: alkylation reactions and acylation reactions. This reaction type is a form of… …
95Observatoire pour la minéralogie, l'eau, les glaces et l'activité — L Observatoire pour la minéralogie, l eau, les glaces et l activité, généralement désigné par son acronyme OMEGA, est un instrument scientifique embarqué à bord de la sonde spatiale européenne Mars Express, lancée le 2 juin 2003 par un… …
96ic — abbr. integrated circuit. * * * ic, suffix added to nouns to form adjectives. 1. of or having to do with : »Atmospheric = of or having to do with the atmosphere. Icelandic = of Iceland. 2. having the nature of : »Heroic = having the nature of a… …
97IC — abbr. integrated circuit. * * * ic, suffix added to nouns to form adjectives. 1. of or having to do with : »Atmospheric = of or having to do with the atmosphere. Icelandic = of Iceland. 2. having the nature of : »Heroic = having the nature of a… …
98I.C. — Jesus Christ. [ < L I(esus) C(hristus)] * * * ic, suffix added to nouns to form adjectives. 1. of or having to do with : »Atmospheric = of or having to do with the atmosphere. Icelandic = of Iceland. 2. having the nature of : »Heroic = having… …
