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प्रश्न
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
उत्तर
| S.No | Element | Symbols |
| (i) | Oxygen | O |
| (ii) | Gold | Au |
| (iii) | Calcium | Ca |
| (iv) | Cadmium | Cd |
| (v) | Iron | Fe |
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संबंधित प्रश्न
Explain the terms 'valency' and 'variable valency'.
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
Give the symbol of the following element:
Mercury
State the type of element for the following:
Antimony
State the type of element for the following:
Sodium
Write the radical of the following valency:
Aluminium
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
What does the symbol '(s)' present in a chemical equation, mean?
