Rank Na, Mg and K in order of increasing 2nd ionization energy
a. Na < K < Mg
b. Mg < K < Na
c. K < Na < Mg
d. K < Mg < Na
e. Mg < Na < K
a. Na < K < Mg
b. Mg < K < Na
c. K < Na < Mg
d. K < Mg < Na
e. Mg < Na < K