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प्रश्न
Define Alchemy.
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उत्तर
Alchemy was a form of chemistry studied in the middle age, which was concerned with trying to discover ways to change ordinary metals into gold.
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संबंधित प्रश्न
Define: Compounds
What is meant by atomicity? Name the diatomic element.
How are the elements with variable valency named? Explain with an example.
Fill in the blank:
Symbol represents _____ atom(s) of an element.
Give the symbol and the number of atoms of the following elements present in water.
Give the symbol and the number of atoms of the following elements present in carbon dioxide.
Give the symbol of the following element:
Potassium
Give the symbol of the following element:
Mercury
Give the symbol of the following element:
Phosphate
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
