Selenium

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Selenium is a chemical element, having the chemical symbol Se.

Selenium
78.96(3)



  Se
34
[Ar] 4s2 3d10 4p4
[ ? ] Non-Metal:

Its atomic number (the number of protons) is 34. It has a Standard Atomic Weight of 78.96(3), and is typically found as a solid in its elemental form.

Selenium is considered to be a member of the "Non-Metal" class of elements, has a boiling point of 685 °C , and a melting point of 220.5 °C .

Role in health

Deficiency of selenium may cause heart failure.[1]

Deficiency of selenium may cause coronary heart disease[2]

References

  1. ↑ Saliba W, El Fakih R, Shaheen W (2010). "Heart failure secondary to selenium deficiency, reversible after supplementation.". Int J Cardiol 141 (2): e26-7. DOI:10.1016/j.ijcard.2008.11.095. PMID 19059654. Research Blogging.
  2. ↑ Flores-Mateo G, Navas-Acien A, Pastor-Barriuso R, Guallar E (2006). "Selenium and coronary heart disease: a meta-analysis.". Am J Clin Nutr 84 (4): 762-73. PMID 17023702. PMC PMC1829306. [e]
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