why some elements have variable valency??
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When an element exhibits more than one valency it is said to be it,s variable valency
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hey mate
here is your answer
some elements such as gold,copper, mercury, tin,lead and iron exhibits more than one valency because sometimes ,they lose electrons from their penultimate (second last) Shell also.
here is your answer
some elements such as gold,copper, mercury, tin,lead and iron exhibits more than one valency because sometimes ,they lose electrons from their penultimate (second last) Shell also.
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