Solid phase
Official name
Sodium selenide
Secondary names
Sodium(I) selenide
CAS number
1313-85-5
Type
Family
ionic solid
Class
normal salt
Compound type
selenide
Chemical composition
Formula
$(Na^+)_2 \cdot Se^{2-}$
Chemical formula
Na2Se
Elemental formula
(Na+)2 (Se2-)
Isotope mixture type
terrestrial abundance
6.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Na^+$ Sodium cation element 2 0.6666666666666666 1 constituent cation main
$Se^{2-}$ Selenide anion element 1 0.3333333333333333 1 constituent anion main
Chemical bonds
  Bond Number
$Na^{+} \cdot Se^{2-} \cdot$ 2
Class
normal salts (07)
Type
simple normal salts (07.01)
Phase type
crystalline
Crystal system
isometric (cubic)
Molar mass
124.95 $g/mol$
Density
2.625 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 1148K (875°C)
Refringence type
isotropic
Pure color
colorless
Color
white to red
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