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The Electron Configuration: Ions quiz #1

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  • What is the electron configuration of a potassium ion (K+)?
    The electron configuration of K+ is 1s2 2s2 2p6 3s2 3p6.
  • Which of the following represents the electron configuration of a phosphorus ion (P3−)?
    The electron configuration of P3− is 1s2 2s2 2p6 3s2 3p6.
  • The electron configuration of Fe2+ is [Ar]3d6. Which of the following is true about Fe2+?
    Fe2+ has lost two electrons, both removed from the 4s orbital before the 3d orbital, resulting in [Ar]3d6.
  • Which of the following represents the electron configuration of a sulfur ion (S2−)?
    The electron configuration of S2− is 1s2 2s2 2p6 3s2 3p6.
  • What is the electron configuration of bromine (Br) if it loses three electrons?
    Br has the configuration [Ar]4s2 3d10 4p5; losing three electrons gives [Ar]4s2 3d10 4p2.
  • What is the electron configuration of the iodide ion (I−)?
    The electron configuration of I− is [Kr]4d10 5s2 5p6.
  • What is the ground-state electron configuration of cadmium (Cd)?
    The ground-state electron configuration of Cd is [Kr]4d10 5s2.
  • What is the correct electron configuration for the oxide ion (O2−)?
    The electron configuration of O2− is 1s2 2s2 2p6.
  • How many d electrons are present in a ground-state manganese (Mn) atom?
    A ground-state Mn atom has 5 d electrons (3d5).
  • Which particle has the same electron configuration as a potassium ion (K+)?
    An argon atom (Ar) has the same electron configuration as K+.
  • What is the electron configuration of a fluoride ion (F−)?
    The electron configuration of F− is 1s2 2s2 2p6.
  • What is the electron configuration for Be2+ ions?
    The electron configuration of Be2+ is 1s2.
  • What is the electron configuration of an iodide ion (I−)?
    The electron configuration of I− is [Kr]4d10 5s2 5p6.
  • In the ground-state electron configuration of Fe3+, what is the configuration?
    Fe3+ has the electron configuration [Ar]3d5.
  • What is the ground-state electronic configuration of Ti4+?
    The electron configuration of Ti4+ is [Ar].
  • What is the electron configuration for the Co2+ ion?
    The electron configuration of Co2+ is [Ar]3d7.
  • What is the ground-state electron configuration of the oxide ion (O2−)?
    The electron configuration of O2− is 1s2 2s2 2p6.
  • Which electron configuration is correct for a sodium ion (Na+)?
    The electron configuration of Na+ is 1s2 2s2 2p6.
  • What is the ground-state electron configuration of the fluoride ion (F−)?
    The electron configuration of F− is 1s2 2s2 2p6.
  • What is the electron configuration of a fluoride ion (F−) in the ground state?
    The electron configuration of F− is 1s2 2s2 2p6.
  • What is the electron configuration of Ca2+?
    The electron configuration of Ca2+ is 1s2 2s2 2p6 3s2 3p6.
  • What is the ground-state electron configuration for a carbon ion (C2+)?
    The electron configuration of C2+ is 1s2 2s2 2p2.
  • What is the electron configuration for Mg2+?
    The electron configuration of Mg2+ is 1s2 2s2 2p6.
  • How many total electrons are in a Ni2+ ion?
    A Ni2+ ion has 26 electrons.
  • Which of the following is the ground-state electron configuration of the fluoride ion (F−)?
    The electron configuration of F− is 1s2 2s2 2p6.
  • What is the electron configuration for a chloride ion (Cl−)?
    The electron configuration of Cl− is 1s2 2s2 2p6 3s2 3p6.
  • What is the electron configuration of a cobalt ion (Co2+)?
    The electron configuration of Co2+ is [Ar]3d7.
  • In the ground-state electron configuration of Fe3+, how many unpaired electrons are present?
    Fe3+ ([Ar]3d5) has 5 unpaired electrons.