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What is the relation between Atomic energy and Atomic weight? Give an answer appropriate for class 10 n 11. Give a detailed explanation.




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Atomic energy is the energy that binds the atomic particles like protons, neutrons and electrons all together in one atom.

Atomic energy is mainly the energy of attraction in the nucleus.  When two nuclei are merged together into one nucleus by FUSION , then a lot of atomic energy is released.

When a nucleus of a heavy atom is bombarded with some protons and neutrons at high speeds, the nucleus breaks into two smaller nuclei.  This process called FISSION releases a lot of atomic energy.

Atomic weight is the mass of the nucleus, which is the sum of number of protons multiplied by the mass of protons and the number of neutrons multiplied by the mass of neutrons.


   Atomic energy is more in the heavier atoms.  When heavier (more atomic weight) atoms are broken, there is more energy.

   Atomic weight of the nuclear material changes when atomic energy is released.  In fact the material gets converted into material of smaller atomic weight, when fission happens.

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