Boron: Difference between revisions
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'''Boron''', chemical symbol B, is a trivalent nonmetallic element that never occurs as a free element in nature. In amorphous form, it is a brown powdery substance, while in crystalline form, it is hard and black. Boron has an atomic number of 5, a hardness (Moh's scale) of 9.3, and belongs to group 13 on the periodic table. | '''Boron''', chemical symbol B, is a trivalent nonmetallic element that never occurs as a free element in nature. In amorphous form, it is a brown powdery substance, while in crystalline form, it is hard and black. Boron has an atomic number of 5, a hardness (Moh's scale) of 9.3, and belongs to group 13 on the periodic table. | ||
Because of the remarkable hardness of boron compounds, boron fibers are commonly used by the [[UNSC]] to reinforce other metals.<ref>'''[[Halo: First Strike]]''', ''page 291''</ref> | Because of the remarkable hardness of boron compounds, boron fibers are commonly used by the [[United Nations Space Command|UNSC]] to reinforce other metals.<ref>'''[[Halo: First Strike]]''', ''page 291''</ref> | ||
One example is prior to [[Operation: FIRST STRIKE]], when the [[Spartan- | One example is prior to [[Operation: FIRST STRIKE]], when the [[SPARTAN-II Program|Spartan-IIs]] of [[Blue Team]] used boron fibers to reinforce the hull of a captured [[Type-28 Troop Carrier|Spirit]] dropship.<ref>'''[[Halo: First Strike]]''', ''page 291''</ref> | ||
==Sources== | ==Sources== | ||
Revision as of 22:10, May 14, 2011
Template:SeeWikipedia Boron, chemical symbol B, is a trivalent nonmetallic element that never occurs as a free element in nature. In amorphous form, it is a brown powdery substance, while in crystalline form, it is hard and black. Boron has an atomic number of 5, a hardness (Moh's scale) of 9.3, and belongs to group 13 on the periodic table.
Because of the remarkable hardness of boron compounds, boron fibers are commonly used by the UNSC to reinforce other metals.[1]
One example is prior to Operation: FIRST STRIKE, when the Spartan-IIs of Blue Team used boron fibers to reinforce the hull of a captured Spirit dropship.[2]
Sources
- ^ Halo: First Strike, page 291
- ^ Halo: First Strike, page 291
