Multiple ChoiceWhich of the following electron configurations represents an atom in an excited state?24views
Multiple ChoiceIn an orbital diagram, which rule states that electrons must occupy orbitals singly before pairing up within a subshell?19views
Multiple ChoiceHow many electrons are present in the 4p orbitals of a selenium (Se) atom in its ground state?33views
Multiple ChoiceWhich of the following is the correct electron configuration for the N^{3-} anion?32views
Multiple ChoiceWhich atom has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10}?33views
Multiple ChoiceWhich of the following electron configurations would you expect to belong to a reactive nonmetal?39views
Multiple ChoiceWhat is the total number of electrons required to completely fill the first two main energy levels (n = 1 and n = 2) of an atom?21views
Multiple ChoiceWhich of the following represents the correct electron configuration for a nitrogen atom (atomic number 7)?26views
Multiple ChoiceWhich of the following represents the correct electron configuration for an aluminum (Al) atom?21views
Multiple ChoiceWhich of the following represents the ground state electron configuration of selenium (Se)?34views
Multiple ChoiceWhich element has the ground state electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1?19views
Multiple ChoiceWhich of the following is the correct electron configuration for tellurium (Te)?26views
Multiple ChoiceWhich of the following represents the core electrons in the electron configuration of cobalt (Co, atomic number 27)?18views