The chemical formula for antimony V is Sb(V). This is a Roman numeral notation that indicates antimony has a +5 oxidation state.

Here's why:

* Antimony (Sb) is a metalloid element.

* V represents the Roman numeral for 5, indicating a +5 oxidation state.

Antimony can form compounds with varying oxidation states, but Sb(V) specifies the +5 state. For example, in the compound antimony pentachloride (SbCl₅), antimony has a +5 oxidation state.