Question 1
Among the alkali metals, cesium reacts more rapidly than sodium because:
◦ cesium has more electrons
◦ cesium has more neutrons
◦ the valence electron of cesium is at a greater average distance from the nucleus
◦ cesium has a higher atomic weight
◦ cesium has more protons
Question 2
Arrange the following elements in order of increasing ionization energy: Cs, Sc, Mn.
◦ Sc < Mn < Cs
◦ Sc < Cs < Mn
◦ Cs < Mn < Sc
◦ Cs < Sc < Mn
◦ Mn < Cs < Sc