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प्रश्न
The pictorial symbol for water given by the alchemists was
पर्याय
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उत्तर
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संबंधित प्रश्न
Explain the significance of the symbol H.
An element which can exhibit valencies of 2, 4 and 6 can be :
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
Give the symbol of the following element:
Radon
Give the formula of the following gas:
Nitric oxide
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).
Bicarbonate
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
______ of some elements are derived from Latin or Greek names of the elements.
In the same way in chemistry, each element is denoted by a ______.
Which letter is never used in any element symbol?
