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प्रश्न
Write the radical of the following valency:
Calcium
विकल्प
1+
2+
3+
1−
2−
3−
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उत्तर
2+
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संबंधित प्रश्न
Give the symbol of the following element:
Platinum
State the type of element for the following:
Oxygen
State the type of element for the following:
Fluorine
Write the chemical formula of the following:
calcium sulphide
Write the chemical formula of the following:
calcium carbonate
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).
Sulphate
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
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
How many elements are known at present?
