Answer:
Different ions of an element
Step-by-step explanation:
From the options given, it is only the different ions of an element that can have different electrons.
This is because ions carry charge which could be positive or negative due to a deficit or excess of electrons.
A cation would be formed if there is a deficit of electrons and the atom becomes positively charged, and an anion would be formed if there is an excess of electrons and the atom becomes negatively charged.
For different ions of the same element, the electron number would vary and this would thus lead to each different ion carrying a greater or lesser charge than the other ions of the same element.