Final answer:
An electric dipole can be induced, transient, and permanent.
Step-by-step explanation:
An electric dipole can be induced, transient, and permanent.
(a) An electric dipole can be induced in a neutral atom by an external electric field, resulting in an induced dipole moment that aligns with the external field.
(c) An electric dipole can also be transient, meaning it is temporary and lasts only as long as the electric field is present.
(d) Lastly, an electric dipole can be permanent, such as in molecules with non-zero dipole moments due to their asymmetrical charge distribution.