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प्रश्न
Define atomic mass unit. What is its symbol ?
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उत्तर
Atomic mass unit can be defined as one twelfth (1/12) of the mass of an unbound atom of carbon-12. The atomic masses of all the elements are determined by comparing the mass of their atom with that of the carbon-12 atom.
Atomic mass unit = 1/12 the mass of a carbon-12 atom
(b) The symbol of atomic mass unit is “u”.
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संबंधित प्रश्न
Name the element used as a standard for atomic mass scale.
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Give the symbol of the following element:
Calcium
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Fluorine
State the type of element for the following:
Boron
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Sulphate
Write the radical of the following valency:
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).
Nitrate
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).
Carbonate
Write a note on Greem symbols.
