Atomic Number: 34
Selenium

Se

Electrons: 2-8-18-6
Oxidation States: +4+6+2
Atomic Weight: 78.96
Phase: Gas
M.P.: 494 K
(221 °C, 430 °F)
B.P.: 958 K
(685 °C, 1265 °F)
C Point (K): 1493

Occurrence: 2.03x10-7%
Natural sources of selenium include certain selenium-rich soils, and selenium that has been bioconcentrated by certain toxic plants such as locoweed. Anthropogenic sources of selenium include coal burning and the mining and smelting of sulfide ores

3 feet in diameter
acrylic on masonite