Sulfur is the least reactive nonmetal among the options provided.
ELECTRONEGATIVITY:
- Electronegativity refers to the ability of an element to pull or gain electrons toward itself.
- Electronegativity of elements in the periodic table decreases down a group and increases from left to right across the periodic table.
- Electronegativity of an element determines the reactivity of that element. That is; a less electronegative element will be less reactive and vice versa.
- According to this question, the descending order of electronegativity is as follows:
F → Cl → O → S
- Since sulphur has the least electronegativity, it is likely to be the least reactive.
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