Neutral
Positive
Negative
Possibly positive or negative
Positive
Possibly positive or negative
Negative
Neutral
A different number of neutrons.
A different number of electrons.
A different number of molecules.
The same number of neutrons.
Electrons
Neutrons
Photons
Protons
82
126
164
208
Dissolving in blood plasma
Sharing electrons with other ions
Combining with ions of similar charges
Passing through a cell's plasma membrane.
Electrons
Protons
Neutrons
Valence electrons
Energy levels
Two
Four
Six
Eight
Fourteen
Protons only.
Neutrons only.
Electrons only.
Both protons and electrons.
Both neutrons and protons.
It gains one or more electron.
It loses one or more electron.
It shares electrons.
One or more of its electrons changes energy levels.
It emits radiation.
An ion has an unequal number of protons and electrons, while an atom has an equal number
An ion has an equal number of protons and electrons, while an atom has an unequal number
An atom has an unequal number of protons and neutrons, while an ion has an equal number
An atom has its electrons in orbitals, while an ion has its electrons in its nucleus
An atom must have an equal number of neutrons and electrons, while an ion does not.
1
2
3
4
Covalent
Electrostatic
Hydrogen
Intermolecular
Covalent
Hydrogen
Intermolecular
Ionic
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