The first excited state of a mercury atom is above the ground state. a moving electron collides with a mercury atom, and excites the mercury atom to its first excited state. immediately after the collision the kinetic energy of the electron is . what was the kinetic energy of the electron just before the collision?

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

this a false

explanation:

positive reinforcement? ?

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop