# What is the chemical formula for the compound formed between chromium(VI) and iodine?

Mar 20, 2018

$C r {I}_{6}$

#### Explanation:

Chromium VI has an oxidation number value of +6.
Iodide an a negative ion normally has an oxidation number value of -1

$1 \times + 6 + 6 \left(- 1\right) = 0$

so it takes 6 Iodide ions to balance the 1 Chromium ion of +6

The formula then is

$C r {I}_{6}$