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प्रश्न
How are the elements with variable valency named? Explain with an example.
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उत्तर
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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संबंधित प्रश्न
An element which can exhibit valencies of 2, 4 and 6 can be :
What do the following symbol stand for?
H2
State the type of element for the following:
potassium
Give the symbol of the following element:
Boron
State the type of element for the following:
Fluorine
State the type of element for the following:
Platinum
Give three reasons why – carbon dioxide is considered a compound, while carbon – an element.
Write the radical of the following valency:
Sodium
State the valency of the following metallic element and write symbol with the valency
Potassium
Give the qualitative and quantitative meaning of the term ‘symbol’.
