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प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
उत्तर
The names of five familiar elements are:
- Oxygen: O
- Iron: Fe
- Gold: Au
- Silver: Ag
- Hydrogen: H
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संबंधित प्रश्न
Define: Compounds
The formula of the sulphate of an element X is X2(SO4)3. The formula of nitride of element X will be :
What is a symbol? What information does it convey?
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of its
Acetate
Give the symbol and the number of atoms of the following elements present in carbon dioxide.
Give the symbol and the number of atoms of the following elements present in zinc chloride.
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Na1+ Cl1-
Define the term ‘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).
Carbonate
What does the symbol '(l)' present in a chemical equation, mean?
