Boron
Boron
Boron (pronounced: /ˈbɔːrɒn/, from Arabic: بورق, buraq) is a chemical element with the symbol B and atomic number 5. It is produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis.
Etymology
The name boron originates from a combination of carbon and the Arabic word buraq, which means "white". The element was discovered by Sir Humphry Davy, Joseph Louis Gay-Lussac and Louis Jacques Thénard in 1808.
Properties
Boron is a metalloid: it has properties of both metals and non-metals. It is a poor electrical conductor at room temperature but a good conductor at high temperature.
Uses
Boron is used in a variety of applications including in pyrotechnics, for heat resistant alloys, and in control rods of nuclear reactors. It is also used in the production of borosilicate glass, which is known for its resistance to thermal shock.
Health Effects
In humans, boron is considered an essential nutrient. However, excessive intake can be harmful and can lead to boron poisoning, which can cause nausea, vomiting, and potential long-term damage to the kidneys.
Related Terms
See Also
External links
- Medical encyclopedia article on Boron
- Wikipedia's article - Boron
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