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Physical and Chemical Properties of Hydrogen

How does dihy...

Question

How does dihydrogen reacts with halogens like (i) Chlorine and (ii) Fluorine?

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Solution

Hydrogen's reaction with fluorine occurs very fast because fluorine is the most electronegative.
$H_{2} + F_{2} \to 2 H F$
Hydrogen's reaction with chlorine is rapid in the presence of light because it is photochemically initiated.
$H_{2} + C l_{2} \to 2 H C l$ .

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