Final answer:
Copper typically forms a +1 charge ion, known as copper(I) or cuprous ion, when it loses one electron from its electron configuration, leading to a positive charge.
Step-by-step explanation:
The charge of the ion typically formed by copper when it loses one electron is +1. This occurs because copper is a transition metal and can form cations with variable charges, either Cu+ (copper(I) or cuprous ion) or Cu2+ (copper(II) or cupric ion). The copper(I) ion is formed when copper loses one electron from its electron configuration 1s²2s²2p¶3s²3p¶3dˢ4s¹ to become 1s²2s²2p¶3s²3p¶3d˩, resulting in a positively charged ion due to the imbalance between protons and electrons.