Explain the Reactivity Series for G1-2 and G6-7

G1-2 gets more Reactive because the Electron is further away from the Nucleus, the Atom is bigger and the Attraction of the Positive Nucleus and the Negative Electron is Weaker G6-7 gets Less reactive because the Positive Nucleus can spend More Energy to gain a Electron, because its Closer. As you go down, the Attraction gets weaker.