Each element has its own set of characteristic absorption lines because
A)the temperature of each element can varies.
B)elements can exist in different forms of matter.
C)electron energy levels differ for each element.
D)each element has a different mass.
E)absorption lines depend upon the speed of the object.

Question

Quizplus · Accepted Answer

Absorption lines are caused by electrons in an atom absorbing photons of certain wavelengths, which excite them to higher energy levels. The energy levels are specific to each element due to the unique arrangement of electrons in their atoms. Therefore, each element has its own set of characteristic absorption lines. The temperature, form of matter, mass, and speed of the object do not affect the characteristic absorption lines.

Each Element Has Its Own Set of Characteristic Absorption Lines