PLS HELP NO LINKS PLS WILL MARK BRAINLIEST IF CORRECT What kinds of observations can be made with atomic probe microscopes?
a. Materials can be seen in micrometers which are millionths of a meter on the scale of blood cells.
b. Materials can be seen in picometers which are trillionths of a meter or the size atoms.
c. Materials can be seen in nanometers which are billionth of a meter, slightly larger than atoms.
d. Materials can be seen in millimeters which are thousandths of a meter or the size sand particles.

The Answer would be B (Materials can be seen in picometers which are trillionths of a meter or the size atoms.

Explanation:

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

a electronegativity decreases beacuse the size of nucleus is bigger.