The electron beam strikes the specimen in an area where there is a high concentration of heavy metal atoms.What does the spot on the phosphorescent screen of the electron microscope just below this part of the specimen look like?
A)It is dark.
B)It is bright.
C)It is speckled.
D)It is invisible.
E)It is purple.

Question

Quizplus · Accepted Answer

Heavy metal atoms scatter electrons more effectively, resulting in fewer electrons reaching the screen, making the spot appear dark.

The Electron Beam Strikes the Specimen in an Area Where