Albr2

The chemical compound AlBr2 is a binary ionic compound consisting of the elements aluminum and bromine. It is composed of one aluminum cation (Al3+) and two bromide anions (Br-), which combine to form a neutral compound with the formula AlBr2.

Aluminum, a metal, has three valence electrons, while bromine, a nonmetal, has seven. In order to form a stable compound, aluminum donates three electrons to each of two bromine atoms, resulting in the formation of two Al3+ cations and three Br- anions that combine to form AlBr3. However, due to electrostatic forces of attraction between oppositely charged ions, two of the bromide ions can share a pair of electrons with each other, forming a covalent bond and thereby giving rise to the AlBr2 compound.

AlBr2 is a white or pale-yellow solid at room temperature and is soluble in polar solvents such as water and ethanol. It has applications in organic synthesis, as a catalyst, and in the production of other chemicals. Like most ionic compounds, it has a high melting point and boiling point due to the strong electrostatic forces that hold the cations and anions together in a crystal lattice structure.