* Protons: The number of protons defines the element. 23 protons means the element is Vanadium (V).
* Neutrons: The number of neutrons can vary within an element, creating isotopes. This particular isotope would be Vanadium-51 (23 protons + 28 neutrons = 51 atomic mass units).
* Electrons: A neutral atom has the same number of protons and electrons. This atom has 5 fewer electrons (23 protons - 18 electrons = 5) than protons. This means it has a +5 charge.
Therefore, the element is Vanadium with a +5 charge (V⁵⁺).
