7 Science

What is the basic unit of an element?
Electron
Nucleus
Atom
Proton
What is the negatively charged portion of at atom called?
Proton
Neutron
Electron
What part of an atom has no electric charge or is neutral?
Proton
Neutron
Electron
What part of an atom is positively charged?
Proton
Neutron
Electron
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