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प्रश्न
Write the chemical formula of the following:
calcium sulphide
उत्तर
CaS
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संबंधित प्रश्न
What is the significance of the symbol of an element ? Explain with the help of an example.
The formula of the sulphate of an element X is X2(SO4)3. The formula of nitride of element X will be :
Give the symbol of the following element:
Chlorine [chloride]
Give the symbol of the following element:
Lead
Write the radical of the following valency:
Sulphate
Write the chemical formula of the following:
magnesium 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).
Permanganate
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
What does a chemical symbol represent?
How many elements are known at present?
