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EC, OB, Valence, LEDS

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  • How many electrons does this element have?
    29
  • What is the total number of electrons if you have an electron configuration of 1s2 2s2 2p6?
    10
  • How are the elements arranged in the modern periodic table?
    Arranged according to increasing atomic number
  • The number of electrons is equal to ______ and the _________.
    protons; electrons
  • What principle is involve in the order of filling the different sublevels and states that electrons should occupy orbitals in order of increasing energy?
    Aufbau Principle
  • TRUE or FALSE: The symbol in LEDS represents the valence electrons and the dot represents the nucleus.
    False
  • How many valence electrons should LITHIUM have in its Lewis Electron Dot Structure?
    1
  • How many electrons can the first energy level hold?
    2
  • What is the valence electron of Magnesium?
    2
  • What atom matches this electron configuration? 1s2 2s2 2p6 3s2 3p6 4s2 3d10
    Zinc
  • TRUE or FALSE: LEDS is use to emphasize the electron configuration of an element.
    FALSE
  • What is the total number of electrons that can occupy the "p" shaped orbitals?
    6
  • What do you call the electrons occupying the outermost shell of an atom?
    Valence electrons
  • What is the electron configuration of an oxygen atom?
    1s2 2s2 2p4
  • What are the four sublevels or orbitals in an atom?
    spdf
  • What is missing in the given electron configuration: 1s 2s 2p 3s 3p 4s 3d ____ 5s 4d?
    4p
  • What rule states that a maximum of two electrons, each having opposite spins, can fit in an orbital?
    Pauli's Exclusion Principle
  • What is the valence electron of Argon?
    8
  • What principle states that every orbital in a given subshell is singly occupied by electrons before a second electron is filled in an orbital?
    Hund's Rule
  • Which element is represented by this orbital notation?
    Nitrogen