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name
ƒZƒŒƒ“
Selenium
Œ´Žq—Ê
Atomic Weight
78.96 ˆÀ’蓯ˆÊ‘Ì
Stable Isotope
@—L@
@
‘°”Ô†
Group
16 Œ³‘fŒQ
Category
ƒJƒ‹ƒRƒQƒ“
Chalcogen
‹à‘®«
Metallicity
”¼‹à‘®
Metalloid
@
—Z“_iŽj
Melting Point
220.2 •¦“_iŽj
Boiling Point
684.9 퉷툳‚Å‚Ìó‘Ô
State
ŒÅ‘Ì
solid
@
–§“x(g/cm3)
Density
4.82 ”ä”M(cal/molŽ)
Specific Heat
0.084 ”­Œ©”N
Discovery
1818
@
“dŽq”z’u
Electron Configuration
Ar 3d10 4s2 4p4 Œ´Žq”¼Œa(ð)
Atomic Radius
1.16
@
ƒCƒIƒ“‰»ƒGƒlƒ‹ƒM[(eV)
Ionization Potential
9.752 “dŽqe˜a—Í(eV)
Electron Affinity
2.0206
@
Œ‹»\‘¢
Crystal Structure
hex ”õl
note
@