Question

What is the ionic charge of copper?

Answer 1

Hint: In an ionic state, an element always exists in the charge form, one positive like Sodium ( $N{a}^{+1}$ ), two positive like calcium ( $C{a}^{2+}$ ), one negative like chlorine ($C{l}^{1-}$). These charges are obtained by the elements on the basis of the rule that each element tries to gain stability by attaining the noble gas configuration.

Complete answer:
Some elements have specific oxidation states like the group one element has one extra electron thus gaining stability by losing it and forming cations. Similarly, group seventeen elements need one more electron to gain the noble gas configuration thus they accept the electron and form anion.
However, the transition elements have a d-subshell, due to this subshell the transition metals have varied oxidation states. They may be mono positive, di positive, tri positive, or more. The transition metals always form cations and not anions due to the fact that they have excess electrons in the d-subshell.
Copper is a transition metal of $3d$ series, with atomic number equals to $29$ . And has electronic configuration as $3d^{10}4s^1$ . Copper has two ionic states which are $+1,+2$ named cuprous and cupric.
Cuprous is mono positive copper represented as copper (I) and Cupric is di positive copper represented as copper (II).

Note:
Copper is a transition element with the atomic number $29$ . It is an electropositive element with a variable oxidation state. Copper is widely used as a catalyst like in the Ullmann reaction, Glaser coupling reaction, Libeskind srogl cross-coupling, Evans coupling, and many more. Copper is widely used as a nanoparticle.