150k views
1 vote
Which elements are halogens? Check all that apply. Chlorine (Cl) oxygen (O) carbon (C) radon (Rn) iodine (I) gallium (Ga).

User Manasi
by
4.1k points

2 Answers

1 vote

Step-by-step explanation:

Chlorine oxygen carbon iodine are halogens

User StaticBR
by
4.1k points
4 votes

Answer:

Chlorine, and iodine

Step-by-step explanation:

The halogens contain 7 valence electrons and are always in the group to the left of the noble gases (preferably group 17) By looking at the halogen board, whatever symbol is in the board will apply here

User Smokefoot
by
4.2k points