* Copper (Cu) Atomic Number: Copper has an atomic number of 29. This means a neutral copper atom has 29 protons and 29 electrons.
* Cation Formation: The "+" sign indicates that the copper atom has lost one electron to become a cation.
* Electron Count: A neutral copper atom has 29 electrons, and the Cu+ cation has lost one, leaving it with 28 electrons.
* Proton Count: The number of protons in an atom defines its element. Since it's still copper, the Cu+ cation retains its 29 protons.
In summary:
* Cu+ cation has 28 electrons and 29 protons.
