Question

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Define atomic mass unit.
Why is not possible to see an atom with naked eyes?
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Answer 1

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➭Define atomic mass unit.

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An atomic mass unit is defined as a mass equal to one twelfth the mass of an atom of carbon-12. The mass of any isotope of any element is expressed in relation to the carbon-12 standard. For example, one atom of helium-4 has a mass of 4.0026 amu. An atom of sulfur-32 has a mass of 31.972 amu.

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Answer 2

Answer:

Atomic mass unit :- atomic mass unit is a unit used to express the relative masses of atom. one atomic mass is equal to $\frac{1}{12}$ th mass of the of the carbon 12

atom are very tiny their radius is 10^-10m which is extremely small so, its not possible to see an atom through naked eyes.