Have a good look!

Now you should have the idea of how memorized oxidation states and most stable state can be used to figure out the redox chemistry.
One last look at the data! The table will not be displayed in the next set of questions.

Group 1	Li	Na	K	Rb	Cs	Group 2	Be	Mg	Ca	Sr	Ba		Group 13	B	Al	Ga	In	Tl
ns¹	+1*	+1*	+1*	+1*	+1*	ns²	+2*	+2*	+2*	+2*	+2*		ns² np¹	+3*	+3*	+3*	+3*	+3
	0	0	0	0	0		0	0	0	0	0		B and Al have ill-defined negative oxidation states	+1	+1*
									0	0	0	0	0

Group 1

Group 2

Group 13

ns¹

+1*

ns²

+2*

ns² np¹

+3*

B and Al have ill-defined
negative oxidation states

+1*