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प्रश्न
The pictorial symbol for water given by the alchemists was
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संबंधित प्रश्न
Define: Compounds
Select elements and compounds from the following list: Iron, plaster of paris, chalk, common salt, copper, aluminium, calcium oxide, cane sugar, carbon, silica, sodium sulphate, uranium, potassium carbonate, silver, carbon dioxide.
Give the symbol of the following element:
Boron
State the type of element for the following:
Carbon
State the type of element for the following:
Zinc
State the type of element for the following:
Bromine
Give the symbol of the following element:
Hydroxide
State the valency of the following metallic element and write symbol with the valency
Sodium
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
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt and O; the element which forms a polyatomic molecule is ________ and which is liquid at room temperature is ________.
