Chemistry
Explain the terms :
(i) metal activity or electro chemical series
(ii) selective discharge of ions.
Answer
(i) Depending on the ease with which the metals lose their electrons and form ions, they are arranged in a series known as metal activity series or electro chemical series.
The arrangement is so done that the elements that ionize most readily [discharged with great difficulty] are placed at the top of the series and other elements in the descending order.
(ii) The preferential discharge of ions present in an electrolyte at the respective electrodes is known as selective discharge of ions.
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