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प्रश्न
Write the chemical formula of the following:
calcium sulphide
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उत्तर
CaS
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संबंधित प्रश्न
What do you understand by :
Noble gases
The Latin language name of an element is natrium. The English name of this element is :
The atoms of which of the following pair of elements are most likely to exist in free state ?
Define atomic mass unit. What is its symbol ?
Explain the terms 'valency' and 'variable valency'.
Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
State the type of element for the following:
Boron
Give the symbol of the following element:
Phosphate
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).
Oxide
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
