Correct option is B
The correct answer is (b) Fluorine.
· Fluorine is the most reactive element among the halogens and indeed among all elements.
· Its high reactivity is due to its small atomic size and the high electronegativity, which make it extremely efficient at attracting electrons from other elements to form bonds.
· Fluorine reacts with almost all organic and inorganic substances, including metals, non-metals, and noble gases under certain conditions.
· It forms compounds such as hydrogen fluoride (HF), which is a highly reactive and corrosive acid.
Information Booster:
· Chlorine: Chlorine is also highly reactive but less so than fluorine. It is widely used in disinfecting water and in the production of various chemicals.
· Bromine: Bromine is less reactive than chlorine and fluorine. It is used in flame retardants and certain types of medication.
· Iodine: Iodine is the least reactive among the given halogens. It is essential in the human diet for thyroid function and is used as a disinfectant and in medical imaging.