Answer: The equation is written below.
Explanation:
Copper is the 29th element of the periodic table having electronic configuration of [tex][Ar]3d^{10}4s^1[/tex]
When an atom looses an electron to form positive ion, it is called an oxidation reaction.
Copper will loose 1 electron to form +1 ion. The equation for the formation of copper (I) ion from neutral copper atom follows:
[tex]Cu\rightarrow Cu^++1e^-[/tex]
Hence, the equation is written above.