Matter waves were confirmed when it was found that electrons
A) diffract.
B) have a plus or minus spin quantum number.
C) possess a negative charge.
D) have mass.

Question

Quizplus · Accepted Answer

Matter waves, as proposed by de Broglie, were confirmed through experiments showing that electrons can exhibit diffraction patterns, a property characteristic of waves. This was a key piece of evidence supporting the wave-particle duality of matter.

Matter Waves Were Confirmed When It Was Found That Electrons