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प्रश्न
Give the names and symbols of the first twenty elements of the periodic table.
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उत्तर
| Name | Symbol | Name | Symbol |
| Hydrogen | H | Sodium | Na |
| Helium | He | Magnesium | Mg |
| Lithium | Li | Aluminium | Al |
| Beryllium | Be | Silicon | Si |
| Boron | B | Phosphorus | P |
| Carbon | C | Sulphur | S |
| Nitrogen | N | Chlorine | Cl |
| Oxygen | O | Argon | Ar |
| Fluorine | F | Potassium | K |
| Neon | Ne | Calcium | Ca |
संबंधित प्रश्न
Explain the significance of the symbol H.
An element which can exhibit valencies of 2, 4 and 6 can be :
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’
State the type of element for the following:
Sulphur
State the type of element for the following:
Antimony
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).
Plumbite
Name three metals whose symbols are derived from the first letter of the name of the element.
What does the symbol '(l)' present in a chemical equation, mean?
What does a chemical symbol represent?
What is the significance of the symbol of an element?
