Question

true or false: scientists know the exact location of electrons in an atom.
true.
false; scientists use probability to determine the most probable location of an electron.
false; scientists only know how many electrons there are in the atom but not their locations.

Explanation:

According to quantum mechanics, electrons do not have definite positions. Instead, their locations are described by probability distributions called orbitals.

Answer:

B. False; scientists use probability to determine the most probable location of an electron.