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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.
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
State whether the following statement is true or false:
The symbol of element cobalt is CO.
Why is the symbol S for sulphur, but Na for sodium and Si for silicon?
Select the correct answer from the choice given below.
The symbol of mercury is
Give the symbol of the following element:
Bromine [bromide]
State the type of element for the following:
Mercury
Write the radical of the following valency:
Nitrate
Write the radical of the following valency:
Potassium
What is the rarest natural element on the earth?
