Question

can someone please help! Using a periodic table, determine the number of protons, neutrons, and electrons in the ion ^52v24Cr^3

Answer 1

^52v24Cr^3 ?
you mean Cr+3 ?

Answer 2

basically you don't need the periodic table, you have all the info there

24 is the atomic number= number of protons

52 is the mass = number of protons+ number of neutrons

3 is the charge, in this case because it is positive means that it has lost 3 electrons, so the number of electrons is going to be equal to the number of protons minus 3