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प्रश्न
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
पर्याय
atom
element
molecule
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उत्तर
A symbol represents a short form of a / an element.
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संबंधित प्रश्न
What is the significance of the symbol of an element ? Explain with the help of an example.
Match the non-metallic elements – with their correct symbols. Non-metallic elements are:
| Non-Metallic elements | Symbol |
| (a) Carbon | (1) O |
| (b) Chlorine | (2) I |
| (c) Oxygen | (3) Si |
| (d) Phosphorus | (4) C |
| (e) Hydrogen | (5) Cl |
| (f) Nitrogen | (6) P |
| (g) Iodine | (7) F |
| (h) Bromine | (8) H |
| (i) Fluorine | (9) S |
| (j) Silicon | (10) Br |
| (k) Sulphur | (11) N |
State the type of element for the following:
Mercury
Write the radical of the following valency:
Oxygen
Write the radical of the following valency:
Bromine [Bromide]
Write the radical of the following valency:
Sulphate
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
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
What is the rarest natural element on the earth?
