Final answer:
Vanadium with a charge of -4 has 27 electrons
Step-by-step explanation:
The charge of an ion is determined by the number of electrons gained or lost. To find the number of electrons in Vanadium with a charge of -4, we need to determine the oxidation state of Vanadium. In this case, the -4 charge indicates that Vanadium has gained 4 electrons. Since neutral Vanadium has 23 electrons, the number of electrons in Vanadium with a charge of -4 would be 23 + 4 = 27 electrons.