Answer: Positive ions or cations
Step-by-step explanation:
The ions are formed when an atom gains or lose electrons.
The ions are classified into two which are called the cations and anions. The cation is classified as the positive charge formed by the loss of electrons. Example:
is formed by the loss of one electron by

The anion is classified as the negative charge ion formed by the gain of electrons. Example :
is formed the gain of one electron by

Thus when an element loses electrons, it forms positive ions or cations.