Chemistry, 23.03.2020 17:26 sierrawalk6104

Two hydrogen atoms collide in a head on collision and end up with zero kinetic energy. Each then emits a photon of 121.6 nm (n=2 to n=1 transition). At what speed were the atoms moving before the collision?

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Two hydrogen atoms collide in a head on collision and end up with zero kinetic energy. Each then emi...