How can an electron cloud be compared with a spinning airplane propeller? both represent objects that move in a circular motion around a central core. exact locations within either cannot be determined at any given moment in time. either model can be used to picture the shape of an atom.

The answer is that exact locations within either cannot be determined at any given moment in time.

An electron cloud be compared with a spinning airplane propeller in the manner that in both exact location within either cannot be determined at any given moment in time.

In both electron cloud as well as spinning airplane propeller, there is a probability of finding either but exact location can not be determined.

Option (b) is the correct answer.

Explanation:

It is known that an atom has protons, neutrons and electrons as subatomic particles.

Protons and neutrons are placed inside nucleus of an atom whereas electrons revolve around the nucleus.

Therefore, when a spinning airplane propeller is compared with a spinning electron then it means the propeller also moves in circular motion with a high speed.

Therefore, we cannot tell the exact location of propeller at any given moment in time.

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.