1. The problem statement, all variables and given/known data

hi

this is a problem that puzzles me. it goes like this:

energy/10?18 J

ionisation level 0.0

level D

level C

level B

ground state A

?1.9

?2.1

?2.4

? 4.6

An electron with kinetic energy 2.6 × 10?18 J collides inelastically with an electron

in the ground state.

State which energy levels may be occupied following this collision.

A photon of energy 2.6 × 10?18 J is incident on an electron in the ground state.

State and explain what would happen.

2. Relevant equations

e= h1 - h2

3. The attempt at a solution

i looked at the kinetic energy needed to escape the ground state. if i calculate 4.6-2.6, i get 2j of kinetic energy. the electron cant get to level d. will b to c be correct?

for the second part, i am speculating the kinteic energy will have no effect at the ground level. but i am not totally sure. can someone please explain.

please comment.