Question

What does de broglie tells about behaviour of particle?

Answer 1

Wave–particle duality is the concept in quantum mechanics that every particleor quantic entity may be partly described in terms not only of particles, but also of waves. It expresses the inability of the classical concepts "particle" or "wave" to fully describe the behavior of quantum-scale objects. As Albert Einstein wrote:[1]

Answer 2

De broglie equation tells us about the dual natures of particle that is it has both particle as well as wave nature