Question

According to the wave-mechanical model of the atom, electrons in an atom
(1) travel in defined circles
(2) are most likely found in an excited state
(3) have a positive charge
(4) are located in orbitals outside the nucleus

Answer 1

Electrons are negatively charged and are located in orbitals outside the nucleus. Therefore, statement (4) is correct.
Hope this helps~

Answer 2

According to the wave-mechanical model of the atom, electrons in an atom are located in orbitals outside the nucleus.

Another name for the  wave-mechanical model of the atom is the electron cloud model of the atom.

In this model, the electron is treated as a wave. The probability of finding the electron anywhere in the atom outside the nucleus is called an atomic orbital

This atomic orbital is often depicted as an electron cloud.

Learn more: https://brainly.com/question/14156701