In: Chemistry
When an energetic electron with the velocity of 1.00 x 106 m s-1 was collided with Rb atom (assume stationary), Rb- anion moves at 313 m s-1 and released 382.4 nm of visible light. Calculate the energy change during the formation of Rb- anion from Rb atom in kJ mol-1
The negative sign of change in energy means the Addition of one electron to Rb atom will generate interaction energy with other elements which will help in creating Rb- so change in energy is the interaction energy of electrons due to additional energy.