The halogen are highly reactive because they ____.
A./ Easily gain electron
B./ Easily lose electron
C./ Do not lose eletron
D./ Stable
Metal at the right of the periodic table formed ____
A./ Anion
B./ Cathode
C./ Anode
D./ Cation
Non-metal at left hand of the periodic table formed ____
A./ Anion
B./ Cathode
C./ Anode
D./ Cation
Which of the choice below is an example of a substance made up of atom
A./ Bromine
B./ Chlorine
C./ Aluminum
D./ Oxygen​