Identify the odd option from among the following.

Correct option is C

The correct answer is: (c) Argon
Explanation:
· Argon is a noble gas, while the other three – Bromine, Chlorine, Fluorine – are halogens.
· Noble gases are inert and do not usually form compounds, whereas halogens are highly reactive nonmetals.
· All halogens are in Group 17, while Argon is in Group 18.
Information Booster:
· Halogens form salts when combined with metals.
· Fluorine is the most reactive halogen.
· Bromine is the only liquid non-metal at room temperature.
· Argon is used in welding, bulbs, and preservation of historical documents.
· Chlorine is used in water purification.
· Halogens have seven valence electrons, Argon has a complete octet.
Additional Information:
· Bromine, Chlorine, Fluorine – All from Group 17, exhibit similar chemical behaviors.
· Argon – Inert due to full electron configuration.