what is variable valency give an example
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Some elements differ in their capacity to combine with other elements depending on the nature of the reaction; this property is calledvariable valency. For example, the iron in ferrous oxide exhibits a valency of +2, whereas in ferric oxide, it has avalency of +3.
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here is your answer
Some elements differ in their capacity to combine with other elements depending on the nature of the reaction; this property is calledvariable valency. For example, the iron in ferrous oxide exhibits a valency of +2, whereas in ferric oxide, it has avalency of +3.
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variable valency when elements show two or more valencies, as sometimes they lose more electron that are present in its penultimate shell, eg-iron, copper
ans2sun4:
penultimate means
second last shell in the electron
sorry atom
that is, second last shell in the atom, sometimes it loses more electron that are present in its last orbit
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