Higher values of n correspond to excited
states (n > 1) Atoms are excited to these higher states by collisions
with other atoms or electrons or by absorption of a photon of right
frequency Rationalised 2023-24
Physics
304
8 de Broglie’s hypothesis that electrons have a wavelength l = h/mv gave
an explanation for Bohr’s quantised orbits by bringing in the wave-
particle duality