Question

why the electron not present in the place of Neutron?​

Answer 1

Answer:

In electron capture, an atomic electron is absorbed by a proton in the nucleus, turning the proton into a neutron. ... But most atoms do not have too many protons, so there is nothing for the electron to interact with. As a result, each electron in a stable atom remains in its spread-out wavefunction shape.

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Answer 2

Answer:

Electrons are having negative charge and if they can exist in the nucleus they will be neutralised by the positive charges

Thus by applying Heisenberg’s uncertainty principle the radius of the atomic nuclei is 10-15 m and if electrons were exist in the nucleus the maximum uncertainty in its position would have been 10-15 m.

Mass of the electron is 9.1 x 10-31 kg

No electron or particle in the atom posses energy greater than 4MeV

Hence the electrons do not exist inside the nucleus