(c) Discuss the wave-particle duality of light and name one other fundamental particle that possesses a dual nature. (d) When the electron in the hydrogen atom gets excited to n=3, it can decay to n=2 (Balmer series) or to n=1 (Lyman series). Draw schemes showing each possible transition (31 and 32; one scheme per transition) and assign the wavelengths 656.3nm and 102.6nm to the corresponding one. Justify your assignment