Here's how we break it down:

* Cr represents chromium.

* Br₃ represents three bromide ions (Br⁻).

* ·6H₂O represents six water molecules (H₂O) attached to the chromium bromide compound. This is the "hexahydrate" part of the name.

The Roman numeral III in "chromium III" indicates that the chromium ion has a +3 charge (Cr³⁺). This is balanced by the three bromide ions, each with a -1 charge.