Final answer:
The charge of ions for elements like Vanadium (V), Iron (Fe), and Nickel (Ni) can be found using the Periodic Table. Transition metals, including these elements, can form ions with variable charges.
Step-by-step explanation:
The charge of ions for elements like Vanadium (V), Iron (Fe), and Nickel (Ni) can be found using the Periodic Table. Transition metals, including these elements, can form ions with variable charges. The number of valence electrons of an element can be determined by looking at the periodic table group in which the element is categorized. The charge on many ions can be predicted by the location of an element on the periodic table.