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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
What do you understand by :
Noble gases
The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as
follows. Which symbol is the correct one ?
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
State the type of element for the following:
Xenon
State the type of element for the following:
Sodium
Write the radical of the following valency:
Oxygen
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).
Sulphate
What does the symbol '→' present in a chemical equation, mean?
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
What is the rarest natural element on the earth?
