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Nuclear Physics -1 | Shape, Size and Density of Nucleus | NEB Class: 12 | MOE | IOM | IOE | KU | BPKIHS | in Nepali |
The nucleus is the center of an atom. It is made up of nucleons called (protons and neutrons) and is surrounded by the electron cloud. The size (diameter) of the nucleus is between 1.6 fm (10^−15 m) (for a proton in light hydrogen) to about 15 fm (for the heaviest atoms, such as uranium). These sizes are much smaller than the size of the atom itself by a factor of about 23,000 (uranium) to about 145,000 (hydrogen). Although it is only a very small part of the atom, the nucleus has most of the mass. Almost all of the mass in an atom is made up from the protons and neutrons in the nucleus with a very small contribution from the orbiting electrons.

Nuclear density is the density of the nucleus of an atom, averaging about 2.3×10^17 kg/m^3. The descriptive term nuclear density is also applied to situations where similarly high densities occur, such as within neutron stars.
The nuclear density of an typical nucleus can be approximately calculated from the size of the nucleus, which itself can be approximated based on the number of protons and neutrons in it.
Lecturer : Basanta Rajbanshi
M.Sc.(Physics), M.A., B.Ed., TU, 10 years+ teaching experienced
Camera/ Light: Anima Singh

Nuclear Physics

Shape, Size and Density of Nucleus

   • Nuclear Physics -1 | Shape, Size and Densi...  

Mass Energy Equivalent, Mass Defect, Binding Energy, Nuclear Stability

   • Nuclear Physics-2 | Mass- Energy Equivalen...  

Nuclear Fission and Nuclear Reactor

   • Nuclear Physics 3 | Nuclear Fission, Nucle...  

Nuclear Fusion and Life Cycle of Star

   • Nuclear Physics - 4 | Nuclear Fusion | Lif...  

Special Thanks to:
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Loyalty Academy College, Budhanilakantha
Kamyak School, +2 , Bagbazar
Celebration College, Kathmandu
MBM College, New Baneshwor
Campian College, Lalitpur
BVS, Naxal
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