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The central core of an atom is called the hub.
The identity of an element is determined by its number of protons.
Most of the mass of an atom is found in its nucleus.
The region of the atom where electrons are located is called the negative zone.
The mass number is the sum of the protons and neutrons in the nucleus of an atom.
Metals are malleable. This means that they can be pulled into thin wires.
Horizontal rows on the periodic table are called periods.
Vertical columns on the periodic table are called families.
Even though the atom is made of charged particles, it is still neutral. Explain why.
