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Tuesday, December 17, 2013

Boron

type B barn My report is on group B. Boron is a hard, brittle semimetallic element with an atomic number of 5. Boron is in group 13 of the periodic circuit card Compounds of barn, borax, energise been know since early years. Although the pure element was first brisk in 1808 by a Frenchmen named Joseph Gay-Lussac as well as index Louis Thenard. Boron is needed for plant growth and is weighty for chock up health in humans and some other vertebrates. The atomic pitch of boron is 10.81. It melts at about 3956oF and boils at about 6602oF. It has a specific gravity of 2.35.
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The original sources of boron compounds were the minerals borax and boric acid. Boron ranks about 38th in intrinsic abundance among the elements in the earths crust. Although boron has a valence of 3 and its position in the periodic table would indicate a close relationship to aluminum. Borax is used in cleaning compounds, field glass and ceramics, fertilizers, paper and paints, a...If you want to regain a full essay, prepare it on our website: OrderCustomPaper.com

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