Question

if all electrons in an atom are in their lowest energy orbitals, the atom is in the
inert state
radiation - emitting state
excited state
ground state

Explanation:

In atomic physics, when all electrons are in their lowest - energy orbitals, the atom is in its ground state. The excited state is when electrons are in higher - energy orbitals. An inert state refers to atoms with a stable electron configuration like noble gases but not specifically to the lowest - energy state. A radiation - emitting state is related to electrons transitioning between energy levels and emitting radiation, not the lowest - energy state.

Answer:

D. ground state