There is no specific chemical formula for white gold, as it is an alloy rather than a pure element. White gold is typically made from yellow gold, which is an alloy of gold and copper, and is alloyed with other metals to give it a white appearance. Common metals used in white gold alloys include nickel, zinc, palladium, and silver. The proportions of these metals can vary depending on the desired color and properties of the resulting alloy. For example, palladium and nickel are commonly used in white gold alloys because they are more resistant to tarnishing than copper and zinc.

The chemical formula for yellow gold is AuCu, where Au represents gold and Cu represents copper. However, since white gold is an alloy of yellow gold and other metals, its chemical formula will vary depending on the specific composition of the alloy.