Neon has 10 electrons and krypton has 18 electrons which element do you think has a greater chance of forming a momentary dipole and why

krypton has more electrons, and it would have the greater chance of forming a momentary dipole.

The number of electrons in each of the atom affect momentary dipole.

Momentary dipole is one of the London dispersion forces.  It is non-uniform distribution of electrons around a molecule, resulting in a temporary charge difference between its ends.

The number of electron in atom affects its polarization and the higher the number of electrons in an atom, the more easily the electron will move. krypton has more electrons, and it would have the greater chance of forming a momentary dipole.

Learn more about momentary dipole here: link

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."