Question

The densely packed core in an atom in one word
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Answer 1

Answer:

The nucleus is the tiny, dense, central core of the atom and is composed of protons and neutrons. Rutherford's atomic model became known as the nuclear model. In the nuclear atom, the protons and neutrons, which comprise nearly all of the mass of the atom, are located in the nucleus at the center of the atom.

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Answer 2

Answer:

Nucleus

Explanation:

Nucleus is the core material of atom consisting Protons and Neutrons , and have 90% of atom's mass.