Which ground-state atom has an electron configuration described by the following orbital diagram?

Question

Quizplus · Accepted Answer

The given orbital diagram shows 16 electrons being filled in the electron orbitals. These electrons fill up the energy levels from 1s2 to 3p6. The element with this configuration is selenium (atomic number 34), which has 16 electrons distributed in the orbitals as follows: 1s2 2s2 2p6 3s2 3p6. None of the other options have the same electron configuration as shown in the diagram.

Which Ground-State Atom Has an Electron Configuration Described by the Following