Rubidium fluoride

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Rubidium fluoride
IUPAC name	Rubidium fluoride
Other names	Rubidium(I) Fluoride
Identifiers
CAS number	[13446-74-7]
Properties
Molecular formula	RbF
Molar mass	104.466 g/mol
Appearance	white crystalline solid
Density	3200 kg m-3 when solid
Melting point	795°C / 1068K
Related compounds
Other anions	Rubidium fluoride Rubidium chloride Rubidium bromide Rubidium iodide Rubidium hydride Rubidium hydroxide Rubidium oxide Rubidium sulfide Rubidium selenide Rubidium telluride
Other cations	Lithium fluoride Sodium fluoride Potassium fluoride Caesium fluoride Francium fluoride and all other fluorides
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Rubidium fluoride (RbF) 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:

RbOH + HF → RbF + H₂O

Another method is to neutralize rubidium carbonate 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 halogens:

2Rb + F₂ → 2RbF

[edit] References

The references in this article would be clearer with a different or consistent style of citation, footnoting, or external linking.

• WebElements. Retrieved on 2006-02-23.