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3d および4sの状態密度（DOS）について
Density of states (DOS) of 3d and 4s states
正解
Correct answer
正解にした物
The answer which was treated to be correct.
この部分にも点線がほしいが
一応4sと3dを区別できていると
みなす．
Broken curve is required here.
However, this answer is considered
to separate 4s and 3d bands. 不正解にした物
Answers which were evaluated to be incorrect.
4sが途中で切れている．4sと3dの分離が不
明瞭
4sと3dの分離が不明瞭
Classification of the 4s and 3d bands is unclear.
The 4s band is stopped at the upper part of the graph. Classification of the 4s and 3d
bands is unclear.
一見よさそうで，採点の際に思わず○をつけてしまった．良く見ると違う．縦軸が状態密度，横
軸がエネルギーになっているならば正解．テキストの図の意味を十分理解しない状態で図の形
だけを覚えた事による間違い．上の２つの図よりも，より間違い度の高い間違い．
After looking this figure, I heard myself saying, “This is correct!” However, the horizontal and the vertical axes are replaced. This graph has no meaning. Degree of incorrectness of this answer is much higher the those of upper two answers. I think this mistake occurred because students keep this graph shape in mind without understanding the meaning of the density of state.

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