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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
Give two symbols which have been derived from the "English names" of the elements.
The English name of an element is potassium, its Latin name will be :
An atom of an element is denoted by a “symbol”. Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Hydrogen by ‘H’
Give the symbol of the following element:
Sodium
Give the symbol of the following element:
Platinum
Give the symbol of the following element:
Radon
State the type of element for the following:
Radon
Give the symbol of the following element:
Nitrate
Give the symbol of the following element:
Sulphate
Give the formula of the following gas:
Carbon monoxide
