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An ion is:

Select one:

a.
An atom with an extra neutron.

b.
An atom or molecule with an electrical charge.

c.
The outermost shell of an atom.

Respuesta :

solime
The answer is b) an atom with an extra neutron.


The outermost shell of an atom is known as a valence shell.

An atom with an extra neutron is an isotope.

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