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(spread unevenly in the earth's crust, combined with sulfide minerals or with silver, copper, lead, and nickel minerals)
SELENIUM
IMPOTANT INFO! Name: Selenium Symbol: Se Atomic Number: 34 Standard State: Solid Boiling Point: 221 C Melting Point: 685 C Density: 4.79 g/cm3 Atomic Mass: 78.96 amu Family: Chalcogen Classification: Non Metal Discovored: 1818 Appearance: Black, Solid, Very Toxic
ESSENTIAL TO LIFE: *stimulates metabolism* *helps maintain healthy bones* *supports heart health* *is a powerful antioxidant* *protects cells from disease* *lowers risk of joint inflammation* *helps thyroid produce thyroid hormone*
Selenium Treats... 1. Acne 2. Some cancers 3. HIV/AIDS 4. Male Infertility 5. Parkinson's Disease 6. Rheumatoid Arthritis 7. Stomach Cancer 8. Sudden Infant Death Syndrome 9. Senile Cateracts 10. Ovarian Cysts 11. Multiply Sclerosis 12. Cerivical Dysplasia 13, Asthma ...as well as many others!
Lack Of Selenium may cause... ^Weakness or pain in the muscles^ ^Discoloration of the hair or skin^ ^Whitening of the fingernail beds^
Compounds! SeH2 SeO2 SeO3 Se2C12 Se4Cl16
Valence Shell Pattern 2 - 8 - 18 - 6
Selenium compounds have been found that have valences of -2, 4, and 6.
