Let's analyze each statement: (A) Correct: The energy of a photon is given by Planck's equation $E = h\nu$ . (B) Correct: In vacuum, all electromagnetic radiation (photons) travels at the speed of light, $c$ . (C) Correct: Using de Broglie's relation $\lambda = h/p$ and the wave equation $c = \nu\lambda$, we substitute $\lambda = c/\nu$ to get $c/\nu = h/p$, which rearranges to $p = h\nu/c$ . (D) Correct: In collisions between particles (like photon-electron collisions), the fundamental laws of conservation of total energy and total momentum hold true , . (E) Incorrect: Photons are electrically neutral particles; they do not possess an electric charge (unlike \alpha particles or protons) .

Thus, statements (A), (B), (C), and (D) are correct.