Question: The first and second ionization energies of K are 419 kJ/mol and 3052 kJ/mol, and those of Ca are 590 kJ/mol and 1145 kJ/mol, respectively. Compare their values and comment on the differeneces. I'm thinking of two different ways of how to do this even though I think both are wrong. I was wondering if I had to take the energy of K and Ca and subtract them? OR do I just look at them and speak about how "different" they are from each other? I don't know if I'm thinking about this question in a logical way or not? So feed back would be much appreciated. Thanks.