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During electrolysis:

Positively charged ions move to the
negative electrode during electrolysis.
They receive electrons and are reduced.
Negatively charged ions move to the
positive electrode during electrolysis.
They lose electrons and are oxidised.

At the negative electrode
At the negative electrode, positively charged ions gain electrons. This is

Page 2

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chloride, Cl­ chlorine, Cl2
bromide, Br­ bromine, Br2
iodide, I­ iodine, I2
oxygen, O2


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