When an atom actually gains a neutron from outside it is called neutron capture. Atoms almost never emit neutrons (except when high energy processes happen).
Most cases of "gain or loss" of neutrons by an atom happen entirely inside the nucleus, when the process of Beta decay converts a proton to or from a neutron.
Radioactive decay.
Isoltop
isotops
An atom that gains or loses electrons is called an ion. If it gains electrons, it results in a negative ion called an anion. If it loses electrons, it results in a positive ion called a cation.
Ion. Any atom that loses or gains an electron becomes an ion.
It either gains, loses, or shares electrons.
A neutral atom that subsequently gains or loses one [or more] electrons is called an ion. If it gains an electron [or electrons] it will have a negative charge. If it loses an electron [or electrons] it will have a positive charge.
ion
covalent/ionic bonding.
An atom that gains or loses electrons is called an ion. If it gains electrons, it results in a negative ion called an anion. If it loses electrons, it results in a positive ion called a cation.
This is called a redox reaction. An atom that loses an electron is oxidized and an atom that gains an electron is reduced.
Ion. Any atom that loses or gains an electron becomes an ion.
Ion. Any atom that loses or gains an electron becomes an ion.
covalent/ionic bonding.
an atom that gains an electron becomes a negative ion, called an anion.
When an atom loses or gains electrons, it becomes an ion.
ionization Redox reactions
It is called an ion.
an ion
A neutral atom that subsequently gains or loses one [or more] electrons is called an ion. If it gains an electron [or electrons] it will have a negative charge. If it loses an electron [or electrons] it will have a positive charge.