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Chemistry

Grade-9

Easy

Question

Most reactive elemental gas.

Oxygen
Fluorine
Chlorine
Hydrogen

hint 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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