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Topic: Boron group

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Group 13 element

Periodic table group

Carbon group

Carbon group

Group 6 element

Periodic table series

Boron

Nitrogen Group

Group 15 element

Pnictogen

Chemical series

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	Boron - Boron Chamber of Commerce (Site not responding. Last check: 2007-11-07)
		Boron is a trace element, which is found throughout the global environment.
		Boron is a nonmetallic element existing as a dark brown to fl amorphous One tetragonal and two rhombohedral forms of crystalline boron are known.
		Boron is required by your body in trace amounts for proper metabolism of calcium, magnesium, and phosphorus.
	finderssite.com /fdst/boron.htm (1103 words)

	Boron
		Boron compounds are used in the manufacture of glass, soaps, and detergents, and as flame retardants.
		Boric acid and borax are absorbed from the gastrointestinal tract and the respiratory tract, as indicated by increased levels of boron in the blood, tissues, or urine or by systemic toxic effects of exposed individuals or laboratory animals.
		The TDI of boron is derived by dividing the NOAEL (9.6 mg of boron per kg of body weight per day) for the critical effect, which is developmental toxicity (decreased fetal body weight in rats), by an appropriate uncertainty factor, which is judged to be 10 × 6 = 60.
	www.safewateronline.com /wqsi_b.htm (568 words)

	Boron Information
		Boron is a trace mineral found primarily in plant foods and necessary for plant growth.
		Although the biochemical mechanism of boron is not yet known, it does increase steroid hormones such as the sex hormone and vitamin D. Boron plays a role in cell membrane functions that influence response to hormone action, trans-membrane signaling, and trans-membrane movement of regulatory ions.
		Since boron seems to play a role in bone metabolism, particularly with vitamin D and estrogen, postmenopausal women would benefit from adequate intakes of boron to aid in the prevention of osteoporosis.
	www.vitaminherbuniversity.com /topic.asp?categoryid=2&topicid=1016 (945 words)

	Boron (Site not responding. Last check: 2007-11-07)
		Boron, a naturally occurring trace mineral, may prove to be essential in the many intricate processes occurring within human physiology.
		Generic forms of boron are also available for purchase in nutritional supplements and provide adequate intakes of the mineral.
		Boron's main function in the body lies within its regulation of the parathyroid (gland), which is responsible for hormones that provide for numerous metabolic processes.
	www.supplementnews.org /boron (884 words)

	The Hendrix Group - Boron
		High-purity crystalline boron may be prepared by the vapor phase reduction of boron trichloride or tribromide with hydrogen on electrically heated filaments.
		Amorphous boron is used in pyrotechnic flares to provide a distinctive green color, and in rockets as an igniter.
		Boron is similar to carbon in that it has a capacity to form stable covalently bonded molecular networks.
	www.hghouston.com /elements/5.html (515 words)

	notes on elements (Site not responding. Last check: 2007-11-07)
		Boron is considered a metalloid, and the rest in the group are considered metals.
		The carbon group is group 14 on the periodic table.
		This group has the defining characteristic that all the component elements have 5 electrons in their outermost shell, that is 2 electrons in the s subsshell and 3 in the p subshell.
	www.iadeaf.k12.ia.us /notesonelements.html (472 words)

	It's Elemental - The Element Boron
		Boron is used in pyrotechnics and flares to produce a green color.
		Boron-10, one of the naturally occurring isotopes of boron, is a good absorber of neutrons and is used in the control rods of nuclear reactors, as a radiation shield and as a neutron detector.
		Boron filaments are used in the aerospace industry because of their high-strength and lightweight.
	education.jlab.org /itselemental/ele005.html (269 words)

	Boron \| Chemical Elements
		Boron is the first element in Group 13 (IIIA) of the periodic table.
		Boron carbide and boron nitride are used in high-speed tools, military aircraft and spacecraft, heat shields, and specialized heat-resistant fibers.
		Small amounts of boron compounds are also used to control the growth of weeds in agriculture, and as insecticides, fertilizers, and flame retardants.
	www.bookrags.com /research/boron (2088 words)

	Boron, Super - Power Health Nutritional Supplements, Vitamins, Sports Supplements, Diet Supplements, Health Products
		It appears that boron is used in the human body to activate the hydroxylated forms of the steroid hormones.
		If boron is given and there is an activation of the hydroxylated form of testosterone, this in essence means males use more of their existing testosterone in the active form.
		Boron is believed to seek out these hormones in the blood and add a hydroxyl group (hydrogen-oxygen atoms) to them, thereby making them into biologically active steroid hormones.
	www.powerhealth.com /detail.cfm?pageid=366 (869 words)

	Parts of the Table
		Elements, boron, aluminum, gallium, indium, and thallium, are a mixed group.
		Group 3 elements have three electrons in the outer shell, but the larger three elements have valences of both one and three.
		The larger elements in the group, antimony and bismuth, tend to be metals because it is easier for them to donate the five electrons than to attract three more.
	www.swcsd.org /studentwork/periodic_Table/Parts.htm (985 words)

	Le Magazine, November 2003 - Report: Boron Maintains Bones, Joints, Neurons, And May Reduce Prostate Cancer
		Those men consuming the most boron (i.e., in the upper quartile of boron consumption) had a 64% reduction in prostate cancer, while men in the second quartile had a 35% reduction in risk and those in the third quartile reduced their risk by 24%.
		The mechanism of boron’s effect on reducing prostate cancer incidence in the study by Zhang et al previously cited is not known.
		Boron’s effect on bone appears to be mediated by its ability to reduce the urinary excretion of calcium and also magnesium.
	www.lef.org /magazine/mag2003/nov2003_report_boron_01.htm (1291 words)

	WHO \| Boron in drinking-water
		Boron's chemistry is complex and resembles that of silicon (Cotton & Wilkinson, 1988).
		Boron is a relatively inert metalloid except when in contact with strong oxidizing agents.
		As a group, the boron–oxygen compounds are sufficiently soluble in water to achieve the levels that have been observed (Sprague, 1972).
	www.who.int /water_sanitation_health/dwq/wsh0304_54/en/index2.html (442 words)

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