Gchem-1AtomicTheory&ChemComp-ElectronConfiguration-UW

What does the principal quantum number (n) indicate in an electron configuration?

• The energy level of the electron

• The shape of the occupied orbital

• The distance of an orbital from the nucleus

• The maximum number of electrons in a subshell

How are subshells labeled in an electron configuration?

• By the distance of an orbital from the nucleus

• By the energy level of the electron

• By the maximum number of electrons in the subshell

• By the shape of the occupied orbital

What is the maximum number of electrons that can be held in a d subshell?

What does a noble gas abbreviation represent in an electron configuration?

• The configuration of lower-level electrons

• The configuration of valence electrons

• The configuration of all electrons in an atom

• The configuration of higher-level electrons

What is the noble gas abbreviation for the first 10 electrons in a calcium atom?

• [Ne]

• [Ar]

• [Kr]

• [He]

During ionization, which electrons are lost first?

• Inner-shell electrons

• Higher-level electrons

• Valence electrons

• Lower-level electrons

What is the electron configuration for a magnesium atom?

• [Ne]3s23p64s1

• [Ne]3s23p6

• [Ne]3s2

• [Ar]4s2

What is the electron configuration for a Ca+ ion?

• [Ne]3s23p64s1

• [Ar]4s2

• [Ne]3s2

• [Ne]3s23p6

What is the electron configuration for a calcium atom?

• [Ne]3s2

• [Ne]3s23p64s2

• [Ne]3s23p6

• [Ar]4s2

What is the electron configuration for the remaining electrons in the Ca+2 ion?

• [Ne]3s23p6

• [Ne]3s2

• [Ar]4s2

• [Ne]3s23p64s2