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Valence is a somewhat outdated concept in chemistry. It is a number that tries to predict with how many neighboring atoms a certain atom can form a bond. For redox reactions it has been superseded by the concept of oxidation number.

Valence is the name of several places in France:

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... are the Canary Islands and Madeira and across the Mediterranean to the north is Spain. The capital city is Rabat. Other cities include Casablanca, Fes[?] ...