How to tell if an element is a cation or anion? Does it have to do with how many valence electrons it has or something else?
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Hey mate....
WHEN AN ELECTRON LOOSES IT ATOM FROM THE VALENCE SHELL TO GIVE TO ANOTHER ELEMENT .THE ELEMENT IS SAID TO BE CATION
SAME FOR THE ANION...
WHEN A ELECTRON GAINS AN ELECTRON TO FILL IT'S OUTERMOST SHELL IS KNOW AS CATION.
HOPE THIS HELPS YOU....
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