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प्रश्न
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
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उत्तर
The following rules are followed while assigning symbol to an elements:
- Chemical symbols usually consist of one or two letters.
- The symbols of most elements correspond to the first letter (which is capitalized) of their English name. For example, the symbol for oxygen is “O” and that for hydrogen is “H”.
- When there is more than one element that begins with the same letter, their symbols take two letters.
- The first letter is capitalised while the second letter has a lower case.
- For example, the names of both hydrogen and helium begin with H. So, hydrogen is represented by the symbol H and Helium by He.
| Element | Symbol |
| Hydrogen | H |
| Fluorine | F |
| Aluminimum | Al |
| Argon | Ar |
| Phosphorus | P |
| Sulphur | S |
| Chromium | CrCo |
| Cobalt |
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संबंधित प्रश्न
Write the full form of IUPAC. Name the elements represented by the following symbols:
Au, Pb, Sn, Hg
Give the symbol of the following element:
Radon
State the type of element for the following:
Fluorine
State the type of element for the following:
Neon
State the most reactive and the least reactive metal from the following – Zn, Ag, Na, Fe, Cu, Pb.
Give the symbol of the following element:
Phosphate
Write the radical of the following valency:
Iodine
Give the formula of the following gas:
Ammonia
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).
Nitrate
Name three metals whose symbols are derived: from their Latin names.
