An atom emits particles or waves from its nucleus to create a more stable nucleus. The correct option is D.
What is an atom?
An atom is a divisible substance that contains subatomic particles like electrons, protons, and neutrons. The atoms are the smallest unit of matter that made every element. The atom also contains a nucleus, the electrons revolve around the nucleus.
An atom is full of electrons, and when an atom emits energy when an electron changes its level and moves near to the nucleus.
An atom emits a wave or particle to become more stable than before because it lowers its energy. More energy leads to the instability of the atom.
Thus, the correct option is D. To create a more stable nucleus.
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