Chemistry
Grade-9
Easy
Question
Most reactive elemental gas.
- Oxygen
- Fluorine
- Chlorine
- Hydrogen
Hint:
Fluorine is the most reactive element.
The correct answer is: Fluorine
Fluorine is the most reactive elemental gas because it has strongest attraction for oxygen. Fluorine is the most electronegative element and its size is small. Since electronegativity decreases going to the left of the periodic table, oxygen is the second most reactive element on the list.
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