A) LITHIUM is the least reactive alkali metal
B) FRANCIUM is the most reactive alkali metal
C) BERYLLIUM is the least reactive alkaline earth metal
D) RADIUM is the most reactive alkaline earth metal
E) TENNESSINE is the most reactive halogen
For E it might also be Astatine because Tennessine is a fairly new
Potassium, Barium, and Copper because they are metals, and most metals tend to lose electrons when forming an ion.
Ooo that cool good thing I learn from this app
Oil doesn't dissolve in water, which could be your answer.
What the heck is this 9287262729272727272727171
