Module 4 Electrons in Atoms

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Across
  1. 2. the arrangement of electrons in an atom, which is prescribed by three rules—the aufbau principle, the Pauli exclusion principle, and Hund's rule
  2. 3. A phenomenon in which photoelectrons are emitted from a metal's surface when light of a certain frequency shines on the surface
  3. 9. the lowest allowable energy state of an atom
  4. 12. An atomic model in which electrons are treated as waves; also called the wave mechanical model of the atom
  5. 16. Includes all forms of electromagnetic radiation; the types of radiation differ in their frequencies and wavelengths
  6. 18. states that each electron occupies the lowest energy orbital available
  7. 20. Assigned by the quantum mechanical model to indicate the relative sizes and energies of atomic orbitals
  8. 22. states that a maximum of two electrons can occupy a single atomic orbital but only if the electrons have opposite spins
  9. 24. consists of an element's symbol, representing the atomic nucleus and inner-level electrons, that is surrounded by dots, representing the atom's valence electrons
  10. 25. States that it is not possible to know precisely both the velocity and the position of a particle at the same time
Down
  1. 1. the electrons in an atom's outermost orbitals; determine the chemical properties of an element
  2. 4. predicts that all moving particles have wave characteristics and relates each particle's wavelength to its frequency, mass, and Plank's constant
  3. 5. The major energy levels of an atom
  4. 6. 6.626×10^-34 J/s, where J is the symbol for the joule
  5. 7. The number assigned to each orbit of an electron
  6. 8. A set of frequencies of electromagnetic waves given off by atoms of an element; consists of a series of fine lines of individual colors
  7. 10. states that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins can occupy the same orbitals
  8. 11. A three-dimensional region around the nucleus of an atom that describes an electron's probable location
  9. 13. The energy levels contained within a principal energy level
  10. 14. A form of energy exhibiting wavelike behavior as it travels through space; can be described by wavelength, frequency, amplitude, and speed
  11. 15. The height of a wave from the origin to a crest, or from the origin to a trough
  12. 17. The minimum amount of energy that can be gained or lost by an atom
  13. 19. The shortest distance between equivalent points on a continuous wave; is usually expressed in meters, centimeters, or nanometers
  14. 21. The number of waves that pass a given point per second
  15. 23. A particle of electromagnetic radiation with no mass that carries a quantum of energy