Rubidium fluoride
Encyclopedia
Rubidium fluoride is the fluoride
salt of rubidium
. It is an octahedral crystal
.
There are several methods for synthesising rubidium fluoride. One involves reacting rubidium hydroxide
with hydrofluoric acid
:
Another method is to neutralize rubidium carbonate
with hydrofluoric acid:
The least used method due to expense of rubidium metal is to react it directly with fluorine gas, as rubidium reacts violently with halogen
s:
Fluoride
Fluoride is the anion F−, the reduced form of fluorine when as an ion and when bonded to another element. Both organofluorine compounds and inorganic fluorine containing compounds are called fluorides. Fluoride, like other halides, is a monovalent ion . Its compounds often have properties that are...
salt of rubidium
Rubidium
Rubidium is a chemical element with the symbol Rb and atomic number 37. Rubidium is a soft, silvery-white metallic element of the alkali metal group. Its atomic mass is 85.4678. Elemental rubidium is highly reactive, with properties similar to those of other elements in group 1, such as very rapid...
. It is an octahedral crystal
Crystal
A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions. The scientific study of crystals and crystal formation is known as crystallography...
.
There are several methods for synthesising rubidium fluoride. One involves reacting rubidium hydroxide
Rubidium hydroxide
Rubidium hydroxide is a strong basic chemical and alkali that is formed by one rubidium ion and one hydroxide ion.Rubidium hydroxide does not appear in nature. However it can be obtained by synthesis from rubidium oxide...
with hydrofluoric acid
Hydrofluoric acid
Hydrofluoric acid is a solution of hydrogen fluoride in water. It is a valued source of fluorine and is the precursor to numerous pharmaceuticals such as fluoxetine and diverse materials such as PTFE ....
:
- RbOH + HF → RbF + H2O
Another method is to neutralize rubidium carbonate
Rubidium carbonate
Rubidium carbonate, Rb2CO3, is a convenient compound of rubidium; it is stable, not particularly reactive, and readily soluble in water, and is the form in which rubidium is usually sold.-Uses:...
with hydrofluoric acid:
- Rb2(CO3) + 2HF → 2RbF + H2O + CO2
The least used method due to expense of rubidium metal is to react it directly with fluorine gas, as rubidium reacts violently with halogen
Halogen
The halogens or halogen elements are a series of nonmetal elements from Group 17 IUPAC Style of the periodic table, comprising fluorine , chlorine , bromine , iodine , and astatine...
s:
- 2Rb + F2 → 2RbF