Question

Write the symbol for each of the following ions: 

     (a) the ion with a 1+ charge, atomic number 55, and mass number 133

     (b) the ion with 54 electrons, 53 protons, and 74 neutrons

     (c) the ion with 24 electrons, 30 neutrons, and a 3+ charge

 

Answer 1

1) $^{133}_{55}Cs^+$

2) $^{127}_{53}I^-$

3) $^{57}_{27}Co^{3+}$