9. Electrons in Atoms and the Periodic Table

Which electron configuration corresponds to a neutral oxygen atom (atomic number 8) in the simplified orbital notation?

Which electron configuration represents an atom in an excited state (i.e., an electron has been promoted to a higher-energy orbital while a lower-energy orbital is not filled as expected in the ground state)?

What is the ground-state electron configuration of neon (Ne)?

What is the ground-state electron configuration of gallium (Ga), written using noble-gas shorthand?

Which three principles guide writing the ground-state electron configuration of an atom?

What is the ground-state electron configuration for lead (Pb, atomic number 82) using noble-gas shorthand?

What is the ground-state electron configuration for cadmium (Cd), atomic number 48, in noble-gas shorthand notation?

What is the ground-state electron configuration of carbon (C)?

The electron configuration $s^2{p}^6{s}^2{p}^6{s}^2{p}^6{s}^2{d}^{10}{p}^5$ corresponds to which element?

Which electron configuration correctly represents a neutral lithium atom (atomic number 3) in the ground state?

What is the ground-state electron configuration of the $S^c$ ion?

Which is the correct simplified electron configuration for carbon?

What is the correct simplified (noble-gas) electron configuration of krypton (Kr)?

What is the ground-state electron configuration of boron (B, atomic number 5) using simplified orbital notation?

What is the ground-state electron configuration of sulfur (S, atomic number 16) in simplified noble-gas notation?