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प्रश्न
Write the symbols for the following elements and classify them as solid, liquid and gas. Aluminum, Carbon, Chlorine, Mercury, Hydrogen and Helium
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उत्तर
| Element | Symbol | Classification |
| Aluminum | Al | Solid |
| Carbon | C | Solid |
| Chlorine | Cl | Gas |
| Mercury | Hg | Liquid |
| Hydrogen | H | Gas |
| Helium | He | Gas |
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संबंधित प्रश्न
Explain the significance of the symbol H.
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’
For writing a chemical formula – ‘symbols’ and combining capacity of an element with hydrogen i.e. ‘valency’ should be known. Explain the term – combining the capacity of an element i.e. valency.
State the type of element for the following:
Silicon
State the type of element for the following:
Antimony
State the type of element for the following:
Iodine
Write the chemical formula of the following:
magnesium oxide
Write the chemical formula of the following:
calcium sulphide
State the valency of the following metallic element and write symbol with the valency
Magnesium
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).
Sulphite
