Kinetic energy during energy levels

[aurao2003]

Homework Statement

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.

Homework Equations

e= h1 - h2

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 can't get to level d. will b to c be correct?

please comment.

 

[graphene]

you are correct

 

[aurao2003]

thanks. so the level i am considering is kind of a range of where the kinetic energy falls into?