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प्रश्न
State a reason why the symbol of calcium is ‘Ca’ and of copper is ‘Cu’
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उत्तर
As the name calcium and copper start with same letter of English alphabet ‘C’ so another letter from the name of the element is added to ‘C’.
Hence symbol of calcium is ‘Ca’ and symbol of copper or cuprum (Latin name of copper) is ‘Cu’.
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
What is the significance of the symbol of an element ? Explain with the help of an example.
What is meant by atomicity? Name the diatomic element.
Give the symbol of the following element:
Sodium
State the type of element for the following:
Bromine
Write the radical of the following valency:
Hydroxide
Write the chemical formula of the following:
aluminium chloride
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).
Bisulphite
Define the term ‘symbol’.
What is the rarest natural element on the earth?
