Question

select the correct answer.
in the modern quantum - based atomic theory, what is the name given to a particular space around the nucleus in which an electron moves?
a. orbital
b. nucleus
c. orbit
d. energy level

Explanation:

In modern quantum - based atomic theory, an orbital is a region around the nucleus where an electron is likely to be found. The nucleus is the central part of the atom containing protons and neutrons. An orbit is a concept from the older Bohr model (not the quantum - based theory). An energy level is a broader concept related to the energy of electrons but not the specific space where they move like an orbital.

Answer:

A. orbital