Which half-reaction is most easily oxidized?

answer options:
al3+ + 3e- al = -1.66 v
cu2+ + 2e- cu = 0.34 v
fe3+ + e- fe2+ = 0.77 v
na+ + e- na = -2.71 v
pb2+ + 2e- pb = -0.13 v

1. true or false: minerals are inorganic. true false 2. inorganic means that something has never been found alive 3. halite is another name for and is a mineral with a cubic crystal pattern. table salt rock salt