3. Identify on which of the following elements per set has the highest ionization energy? a. N, O, F b. Na, K, Li c. He, Ne, Ar, Kr d. Mg. Cl, Al, Se 4. Arrange the following listed elements below into increasing Na, CI, Mg, Si a. atomic radius b. ionization energy c. electron affinity d. electronegativity 5. Identify the following statements as TRUE or FALSE a. The periodic law states that there is a periodic repetition of elements' physical and chemical properties when arranged in order of increasing atomic radii. b. Alkali metals have higher ionization energy than halogens c. Electron affinity is the tendency of an atom to receive electrons. d. The easier an atom loses its electron, the less its valence electrons.