Question

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_2. Region surrounding the nucleus where electrons are found.
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_3. Positively charged center of an atom.
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4. Particles that differ in number between isotopes.

Answer 1

Electron shell

Nucleus

Neutrons

Step-by-step explanation:

An atom is made up of three fundamental subatomic particles which are the protons, neutrons and electrons.

• Protons are the positively charged particles. Neutrons do not carry any charges.
• Both protons and neutrons are found in the tiny nucleus at the center of that atom.
• The electrons are negatively charged.
• They are found outside the nucleus in electronic shells.