Question

multiple - choice question
louis de broglie discovered
protons have wavelike properties
electrons have wavelike properties
electrons have a positive charge
both protons and neutrons are made of quarks

Explanation:

Louis de Broglie proposed the wave - particle duality. He suggested that particles, including electrons, have wavelike properties. This is known as the de Broglie hypothesis. Protons having wavelike properties is a more general application of wave - particle duality beyond de Broglie's initial work. Electrons have a negative charge, not a positive charge. The idea that protons and neutrons are made of quarks is from the theory of sub - atomic particles in a different context (quantum chromodynamics) and not related to de Broglie's work.

Answer:

electrons have wavelike properties