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प्रश्न
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).
Plumbite
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उत्तर
| Name | Symbol | Ion | Valency |
| Plumbite | \[\ce{PbO2}\] | \[\ce{[PbO2]^{2-}}\] | −2 |
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Fill in the blank:
Symbolic expression for a molecule is called _____.
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’
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.
Helium by ‘He’
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
Give the symbol of the following element:
Carbon
Give the symbol of the following element:
Sulphur [sulphide]
Give the symbol of the following element:
Arsenic
Give the symbol of the following element:
Chlorine [chloride]
Write the radical of the following valency:
Sulphate
