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प्रश्न
Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
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उत्तर
Dalton used symbol [⚪] for oxygen and [☉] for hydrogen.
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संबंधित प्रश्न
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.
Fill in the blank:
Symbolic expression for a molecule is called _____.
Give two examples of the following:
Solid + Liquid mixture
State what a chemical formula denotes.
State the type of element for the following:
Radon
Write the radical of the following valency:
Sulphite
Give the formula of the following acid:
Carbonic
State the valency of the following metallic element and write symbol with the valency
Chromium
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 ________.
What is the rarest natural element on the earth?
