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Thickness of strand hair = 50 μm
Diameter of an atom =
Now, with the help of conversion factors, convert thickness in micrometer into meter i.e. 1 micrometer =
So, thickness of strand hair =50 μm= 50 \times 10^{-6} m
Therefore,
number of atoms thick is a strand of hair =
=
Hence, number of atoms is thick is a strand of hair.
Answer:
1. 7 protons, 7 electrons, 8 neutrons
2. 16 protons, 16 electrons, 17 neutrons
3. 29 protons, 29 electrons, 34 neutrons
4. 38 protons, 38 electrons, 46 neutrons
5. 56 protons, 56 electrons, 74 neutrons
6. 74 protons, 74 electrons, 112 neutrons
7. 80 protons, 80 electrons, 122 neutrons
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Explanation: