Como saber quando é cátion ou ânion quimicageral enem

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=FMDy9XPj-AE

O que são íons? Íons são espécies químicas carregadas eletricamente. Formam-se por meio de átomos eletricamente neutros. O átomo, ao perder elétron, forma um...

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