Question

A nucleus contains no electrons but it can emit them explain how​

Answer 1

Answer:

In case of an unstable nucleus like that of radioactive elements, number of neutrons is more than that of number of protons. In beta decay, a neutron gets converted into a proton. It emits an electron at very high speed. ... So the electron is created as a part of beta decay and was not there since beginning.

Explanation:

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Answer 2

Answer:

A nucleas containsno electron but it can emit The nucleus ejects anti neutrinos which are kind of electrons. This process is mediated by the weak interaction. The neutron turns into a proton through the emission of a virtual W- boson. ... The virtual W- boson then decays into an electron and an anti neutrino.