An electron is transferred from sodium to chlorine. Sodium becomes a positive ion and chlorine becomes a negative ion. The positive and negative ions attract each other and form the ionic compound ...
The European Space Agency’s (ESA) Negative Ions at the Lunar Surface (NILS) instrument, carried by Chang’e-6, detected negative ions on the lunar surface, produced by interactions with the ...
The atom is neutral as it has two positive protons and two negative electrons. A helium atom that has lost or gained an electron is an ion.
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