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1The very large scattering angles.

213.6 eV or more.

3When making a transition from a high to a low energy state.

4The one with the least energy difference so D.

5 aThe photon will not be absorbed because it is not providing the exact amount of energy needed. The photon will just bounce off the atom leaving the atom in the same state.

bAn energy 10.2 eV will be absorbed, moving the atom to the first excited state, and the electron will bounce off the atom with energy 0.1 eV.