The category of elements that is characterized by filling the "f" sublevels is the....
Inner Transition Metals
500
Why do metals for cations?
Becasue metals have low ionization energies.
500
Which of these elements have a larger atomic radius?
Li
Na
Rb
Fr
Fr
500
Why does ionization increase across a period on the Periodic Table?
Moving across the Periodic Table more elctrons are being added within the the same energy level. This makes the charge between electrons and protons stronger.