Many students believe that chemical reactions occur to enable atoms to obtain full outer electron shells, or ‘octets’

This belief is so strong that they tend to offer this explanation even when they have been taught more appropriate ideas.

Why do hydrogen and fluorine react?

Hydrogen reacts with fluorine to give hydrogen fluoride. The equation for this reaction is:

H2(g) + F2(g) →2HF(g)

The word equation is:

hydrogen + fluorine →hydrogen fluoride

Look at the following diagrams:

Hydrogen flouride diagram

In your own words, explain why you think hydrogen reacts with fluorine. 


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