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प्रश्न
Give the names and symbols of the first twenty elements of the periodic table.
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
How are the elements with variable valency named? Explain with an example.
Fill in the blank:
Symbol represents _____ atom(s) of an element.
Give the symbol of the following element:
Sulphur [sulphide]
Give the symbol of the following element:
Arsenic
Give the symbol of the following element:
Magnesium
Write the radical of the following valency:
Nitrate
Write the radical of the following valency:
Zinc
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
What does the symbol '(aq.)' present in a chemical equation, mean?
Which letter is never used in any element symbol?
