what is the combining capacity of an element
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The combing capacity of an element is known as valency. It depends on the no. of electrons needs to an atom in order to get stability
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Valency is the combining capacity of an element.
For a non-metal
valency= 8 - Valency electron.(no. of electrons in the outermost shell of the atom.
For example: Valency of Oxygen is 2 that is
8-6(valence electons)
If Oxygen gets two more electons then is gains stability ie. forms its octet.
Some transition metals have variable valency.
ex:Fe.
But generally valency of metal=valence electrons
ex: sodiun(Na) has a valency of 1 ie. If it loses it one electron it gains stability.
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