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प्रश्न
Give the qualitative and quantitative meaning of the term ‘symbol’.
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उत्तर
Qualitative meaning: C is the symbol of an atom of the element carbon
S is the symbol of the atom of element sulphur.
This means symbols stand for a specific element.
No two elements can have the same symbol.
Quantitative meaning: A symbol also represents the quantity of the element i.e. atomic mass of the element. Symbol C represents 12 g of carbon. In other words how many times that element is heavier than `1/12` th C12
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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.
Hydrogen by ‘H’
Select the correct answer from the choice given below.
The type of element-phosphorus
State the type of element for the following:
Carbon
State the type of element for the following:
Xenon
State the type of element for the following:
Arsenic
Write the radical of the following valency:
Aluminium
Give the formula of the following gas:
Hydrogen chloride
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
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).
Sulphide
