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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
State whether the following statement is true or false:
The symbol of element cobalt is CO.
Name the elements represented by the following symbols :
Hg, Pb, Au, Ag, Sn
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
Give the symbol of the following element:
Iodine
Give the symbol of the following element:
Radon
State the type of element for the following:
Neon
Write the radical of the following valency:
Calcium
Write the radical of the following valency:
Carbonate
Write the chemical formula of the following:
aluminium chloride
What is the significance of the symbol of an element?
