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प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
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उत्तर
The names of five familiar elements are:
- Oxygen: O
- Iron: Fe
- Gold: Au
- Silver: Ag
- Hydrogen: H
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संबंधित प्रश्न
The English name of an element is potassium, its Latin name will be :
Give two examples of the following:
Solid + Liquid mixture
Explain the terms ‘chemical formula’.
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
K1+ Cl1-
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
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).
Chloride
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).
Zincate
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
Write the constituent elements and their symbols for the following compounds.
- Carbon monoxide
- Washing soda
Which letter is never used in any element symbol?
