Aproton, an electron, and a helium nucleus all move at speed v. rank their de broglie wavelengths from largest to smallest.

Ibelieve that the correct answer is: c. along plate boundaries

Wow good luck with that answer

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.