Solid phase
Official name
Rubidium bromide
CAS number
7789-39-1
Type
Family
ionic solid
Class
normal salt
Compound type
bromide
Chemical composition
Formula
$Rb^+ \cdot Br^-$
Chemical formula
RbBr
Elemental formula
(Rb+) (Br-)
Isotope mixture type
terrestrial abundance
4.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Rb^+$ Rubidium cation element 1 0.5 1 constituent cation main
$Br^-$ Bromide anion element 1 0.5 1 constituent anion main
Chemical bonds
  Bond Number
$Rb^+ \cdot Br^-$ 1
Class
normal salts (07)
Type
simple normal salts (07.01)
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Crystal class symbol
m-3m (Oh)
Crystal spacegroup
Fm-3m
Molar mass
165.372 $g/mol$
Density
3.350 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid RbBr 966 K (693°C)
Refringence type
isotropic
Pure color
colorless
Color
colorless, white
Diaphaneity
transparent to translucent
Luster
vitreous
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