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प्रश्न
Name three metals whose symbols are derived from the first letter of the name of the element.
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उत्तर
Elements whose symbols are derived from the first letter of the name of the element:
- Carbon - C
- Sulphur - S
- Oxygen - O
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संबंधित प्रश्न
How are the elements with variable valency named? Explain with an example.
An atom of an element is denoted by a “symbol” Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Helium by ‘He’
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
Write the chemical formula of the following:
calcium sulphide
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
State the valency of the following metallic element and write symbol with the valency
Potassium
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).
Hydroxide
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).
Bicarbonate
What does the symbol '(l)' present in a chemical equation, mean?
Antimony has the highest tensile strength.
