Variable valency refers to an element's ability to exhibit different valence states, meaning it can form ions with different charges depending on the chemical conditions ..
Normally, the metals donate electrons from their valence shell, so as to form positively charged ions. However, some metals lose electrons from the shell next to the valence shell. In such a situation the element exhibits more than one electropositive valency. Such elements are said to have variable valency.
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Answer:
Variable valency refers to an element's ability to exhibit different valence states, meaning it can form ions with different charges depending on the chemical conditions ..
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Answer:
Normally, the metals donate electrons from their valence shell, so as to form positively charged ions. However, some metals lose electrons from the shell next to the valence shell. In such a situation the element exhibits more than one electropositive valency. Such elements are said to have variable valency.