Advertisements
Advertisements
प्रश्न
Explain the terms 'valency' and 'variable valency'.
Advertisements
उत्तर
Valency: The number of electrons that an atom can lose, gain or share during a chemical reaction is called its valency.
Variable valency: Certain elements exhibit more than one valency, i.e. they show variable valency.
APPEARS IN
संबंधित प्रश्न
Select elements and compounds from the following list: Iron, plaster of paris, chalk, common salt, copper, aluminium, calcium oxide, cane sugar, carbon, silica, sodium sulphate, uranium, potassium carbonate, silver, carbon dioxide.
How are the elements with variable valency named? Explain with an example.
Give the symbol of the following element:
Fluorine
Give the symbol of the following element:
Sulphur [sulphide]
State the type of element for the following:
Copper
State the type of element for the following:
Arsenic
State the type of element for the following:
Chlorine
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Lead
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).
Phosphate
Which letter is never used in any element symbol?
