Argon is a noble gas. It is not a halogen. Fluorine is a example for that.
Potassium is a metal element. It is not a halogen. Example for halogen is Chlorine.
Any element, other than a halogen is - by definition - not a halogen and so it does not have a halogen and that is less than one halogen.
Yes, I (iodine) is a halogen.
This halogen is astatine.
No, Bromine is a Halogen
Halogen.
Halogen is a gas, so your question doesn't make much sense. If you're asking about a halogen (light) bulb, then the answer is: mainly halogen.
Halogen gas is in a Tungsten-Halogen Light Bulb.
Gold is not a halogen it is a transition metal
Bromine is the only liquid halogen
Halogen - band - was created in 1998.
Astatine is the 6th period halogen.