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Question
How are the elements with variable valency named? Explain with an example.
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Solution
If an element exhibits two different positive valencies, then
- for the lower valency, use the suffix -OUS at the end of the name of the metal
- for the higher valency, use the suffix -IC at the end of the name of the metal.
Example:
|
Element |
Lower valency |
Higher valency |
|
Ferrum (Iron) |
Ferrous (Fe2+) |
Ferric (Fe3+) |
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