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sue ong
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What is meant by nuclear atomic model?
The Nuclear Atomic Model is a scientific theory that describes the structure of an atom. It states that an atom is composed of a central nucleus surrounded by electrons in orbit. The nucleus contains protons and neutrons, while the electrons have a negative charge and are responsible for chemical reactions.
The Nuclear Atomic Model was proposed by Ernest Rutherford in 1911. He conducted the famous gold foil experiment where he discovered that atoms have a small, dense, positively charged nucleus at its center, surrounded by a cloud of negatively charged electrons.
The Nuclear Atomic Model is significant because it revolutionized our understanding of atomic structure. Before this model, atoms were thought to be indivisible and uniform. This model showed that atoms have a complex structure and led to further discoveries about the subatomic particles within atoms.
The Nuclear Atomic Model explains the stability of atoms by the arrangement of the subatomic particles. The positively charged protons in the nucleus are attracted to the negatively charged electrons, creating a balance of forces that keeps the atom stable. Additionally, the strong nuclear force between protons and neutrons also contributes to the stability of the nucleus.
The Nuclear Atomic Model is essential in understanding nuclear reactions. Nuclear reactions involve changes in the nucleus of an atom, such as radioactive decay or nuclear fission. This model helps scientists understand the behavior of subatomic particles and the forces at play within the nucleus during these reactions.