What is the correct name for Au3N?

Gold (I) nitride

Explanation:

It is also called Aurous nitride.

Its molecular weight is 604.9064 g/mol

In this compound the oxidation state of gold is + 1 while Nitrogen have - 3.

So three gold atoms are required to make the compound overall neutral.

The oxidation state of element can be determine when the oxidation state of one atom of element is known. For example.

Au₃N

3 (+1) + (x) = 0

3 + x = 0

x = - 3

The nitrogen have - 3 oxidation state.