Which of the following describes a possible outcome after this single collision?
The colliding electron rebounds elastically with a kinetic energy of 11.5 eV11.5\text{ eV}11.5 eV, and a 10.2 eV10.2\text{ eV}10.2 eV photon is simultaneously emitted.
The colliding electron is captured by the hydrogen atom to form a stable H−\text{H}^-H− ion, releasing a 1.3 eV1.3\text{ eV}1.3 eV photon.
The atomic electron is excited to the first excitation level, and the colliding electron continues with a kinetic energy of 1.3 eV1.3\text{ eV}1.3 eV.
The atomic electron is ionized, and both the colliding electron and the freed electron leave the atom with a combined kinetic energy of 1.3 eV1.3\text{ eV}1.3 eV.
