structural:reformatting, stylistic:tone, structural:summarization, quality:corruption
Halides

The colorless curium(III) fluoride (CmF) can be made by adding fluoride ions into curium(III)-containing solutions. The brown tetravalent curium(IV) fluoride (CmF) on the other hand is only obtained by reacting curium(III) fluoride with molecular fluorine:

A series of ternary fluorides are known of the form A Cm F (A = alkali metal).

The colorless curium(III) chloride (CmCl) is made by reacting curium hydroxide (Cm(OH)) with anhydrous hydrogen chloride gas. It can be further turned into other halides such as curium(III) bromide (colorless to light green) and curium(III) iodide (colorless), by reacting it with the ammonia salt of the corresponding halide at temperatures of ~400–450 °C:

Or, one can heat curium oxide to ~600°C with the corresponding acid (such as hydrobromic for curium bromide). Vapor phase hydrolysis of curium(III) chloride gives curium oxychloride: