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प्रश्न
What does a chemical symbol represent?
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उत्तर
A chemical symbol is a shorthand method of representing an element.
Symbol of an element signifies:
- Name of the element.
- One atom of the element for example,
- The symbol O stands for the element of oxygen.
- One atom of oxygen.
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संबंधित प्रश्न
The atoms of which of the following pair of elements are most likely to exist in free state ?
Fill in the blank:
Symbol represents _____ atom(s) of an element.
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’
Match the symbols of metallic elements – with their correct combining power or capacity.
(a) K
(b) Zn
(c) Al
(d) Na
(e) Ca
Combining power or capacity – A : 3 ; B : 2 ; C : 1. (positive valencies)
Give the symbol of the following element:
Bromine [bromide]
State the type of element for the following:
Oxygen
State the type of element for the following:
Xenon
Write the chemical formula of the following:
calcium carbonate
Give the formula of the following gas:
Sulphur dioxide
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
