What is CrF2? Important knowledge about CrF2.

1. Definition of CrF₂:

1.1 Names:

• Common name: Chromium Fluoride
• English name: Chromium(II) Fluoride

1.2 Atomic mass: CrF₂ is a compound of Chromium and Fluorine, wherein Chromium has an atomic mass of 24 and Fluorine has an atomic mass of 19.

1.3 Molecular weight: The molecular weight of CrF₂ is 66,9962.

1.3.1 Molecular structure: A molecule of CrF₂ consists of one atom of Chromium and two atoms of Fluorine.

1.4 Ion structure: In CrF₂, Chromium (Cr) forms the ion Cr₂+, and the two atoms of Fluorine (F) form two F- ions.

2. Properties of CrF₂:

2.1 Physical properties of CrF₂:

• State: CrF₂ is a crystalline solid of blue-black color.
• Color: Blue-black.
• Odor: Odorless.
• pH: Not applicable as CrF₂ is a solid.

2.2 Chemical properties of CrF₂: CrF₂ is very insoluble in water and easily decomposes at high temperatures.

3. Common chemical equations of CrF₂:

   • Cr + F₂ -> CrF₂(ReactionbetweenChromiumandFluorine)

4. Preparation of CrF₂:

4.1 Laboratory preparation of CrF₂: CrF₂ is usually prepared by the reaction between Chromium and Fluorine at high temperatures.

4.2 Industrial preparation of CrF₂: In industry, CrF₂ is prepared by reducing Fluorine in the compound CrF₃ with Chromium at high temperatures.