What is mg + br?

Magnesium and bromine combine to form magnesium bromide, which is an ionic compound with the chemical formula MgBr2. It is a white crystalline solid that is highly soluble in water and other polar solvents. Magnesium bromide is used in a variety of applications such as in the production of pharmaceuticals, flame retardants, and as a catalyst in organic chemical reactions. It is also used in the oil and gas industry for drilling fluids and completion fluids. Magnesium bromide has a high melting point of 650°C and a boiling point of 1,200°C.