Question

questions
1. Define the atomic mass unit.
2. Why is it not possible to see an
atom with naked eyes?​

Answer 1

Explanation:

1) An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12. The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus. In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass.

2) It is not possible to see an atom with naked eyes because the size of an atom is very very small. ... Its atomic radius is 10−10 m. The atom of an element does not exist independently. The dimension of atoms is very small of the order of 1mm.

Answer 2

Answer:

1. The dalton or unified atomic mass unit (symbols: Da or u) is a unit of mass widely used in physics and chemistry. It is defined as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.
2. because atom is very small

I.e. it is microscopic

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