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Chapter 5 review

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  • 1. Chapter 5 Review “Electrons in Atoms” Pre-AP Chemistry Charles Page High School Stephen L. Cotton
  • 2. Chapter 5 Review
    • What is the next atomic orbital in the series: 1s, 2s, 2p, 3s, 3p, ?
    • In Bohr’s model of the atom, where are the electrons and protons located?
    • What is the basis for exceptions to the aufbau diagram?
    • How does the energy of an electron change when the electron moves closer to the nucleus?
  • 3. Chapter 5 Review
    • If the spin of one electron in an orbital is “clockwise”, what is the spin of the other electron in that orbital?
    • What is the approximate energy of a photon having a frequency of 4 x 10 7 Hz? ( h = 6.6 x 10 -34 J . s)
    • Which of the following would be most stable: a) 4d 5 5s 1 , or b) 4d 4 5s 2
  • 4. Chapter 5 Review
    • How many unpaired electrons are in a sulfur atom (Z = 16)?
    • According to the Heisenberg uncertainty principle, if the position of a moving particle is known, what other quantity CANNOT be known?
    • Which of the following has the highest frequency: a) x-rays, or b) gamma rays
  • 5. Chapter 5 Review
    • What is the electron configuration of potassium?
    • What is the number of electrons in the outermost energy level of an oxygen atom?
    • How does the speed of visible light compare with the speed of gamma rays, when both speeds are measured in a vacuum?
  • 6. Chapter 5 Review
    • The principal quantum number indicates what property of an electron?
    • Which scientist developed the quantum mechanical model of the atom?
    • In the Bohr model of the atom, an electron in an orbit has a fixed ___.
  • 7. Chapter 5 Review
    • What is the maximum number of electrons in the second principal energy level?
    • If three electrons are available to fill three empty 2p atomic orbitals, how will the electrons be distributed?
    • What is the wavelength of a wave that has a frequency of 60 MHz?
  • 8. Chapter 5 Review
    • When an electron moves from a lower to a higher energy level, the electron _____.
    • According to the aufbau principle, electrons enter orbitals of ___ first.
    • What is the maximum number of “f” orbitals in any single energy level of an atom?
  • 9. Chapter 5 Review
    • What is the frequency of a photon having an energy 5 x 10 -24 J? ( h = 6.6 x 10 -34 J . s)
    • What types of atomic orbitals (s, p, d, or f) are in the third principal energy level?
    • How would the atomic emission spectra of a sodium atom on Earth compare with sodium in the sun?
  • 10. Chapter 5 Review
    • How many energy sublevels are in the second principal energy level?
    • Emission of light from an atom occurs when an electron _____.
    • Who predicted that all matter can behave as waves as well as particles?
    • What are quanta of light called?
  • 11. Chapter 5 Review
    • Stable electron configurations are likely to contain ____.
    • What is the maximum number of “d” orbitals in a principal energy level?
    • How are frequency and wavelength of light related?
    • What is the maximum number of orbitals in the p sublevel?
  • 12. Chapter 5 Review
    • Which electron configuration would be more stable: a) 4f 7 , or b) 4f 14
    • Which variable is directly proportional to frequency: a) energy, or b) wavelength?
    • Which color of visible light has the shortest wavelength?
    • The quantum mechanical model of the atom involves the _____.
  • 13. Chapter 5 Review
    • How many electrons are in the highest occupied energy level of a neutral atom of each of the following: a) chlorine atom; b) copper atom; c) strontium atom?
    End of Chapter 5 Review

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