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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
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
Write the full form of IUPAC. Name the elements represented by the following symbols:
Au, Pb, Sn, Hg
What do the following symbol stand for?
2H
Give the symbol of the following element:
Mercury
Write the radical of the following valency:
Aluminium
Write the chemical formula of the following:
magnesium oxide
Write the chemical formula of the following:
magnesium sulphate
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Dichromate
