Chem #5

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dee3215
ID:
16898
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Chem #5
Updated:
2010-04-29 23:53:55
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atomic orbital
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Description:
Atomic Orbitals
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  1. What is defined as the distance between identical points on successive waves?
    Wavelength
  2. What is defined as the number of waves that pass through a particular point in one second?
    Frequency
  3. What is the wavelength of light having a frequency of 4.8 x 10^14 s^-1 (c=3.0 x 10^8 m/s)?
    630 nm

    • 3.0x10^8 m/s x 1sec/4.8x 10^14 s
    • 6.3 x10^-7
    • nm=10^-9
    • 630 nm
  4. Select the arrangement of electromagnetic radiation which starts with the lowest energy and increases to greatest energy.
    radio, infrared, ultraviolet, gamma rays
  5. The size of an atomic orbital is associated with
    the principal quantum number (n)
  6. The shape of an atomic orbital is associated with
    The angular momentum quantum number (l)
  7. Atomic orbitals developed using quantum mechanics describe
    regions of space in which one is most likely to find an electron
  8. Which of the following is a correct set of quantum numbers for an electron in a 3d orbital?
    n=3, l=2, ml=-2
  9. "No two electrons in an atom can have the same four quantum numbers" is a statement of
    The Pauli exclusion principle
  10. The number of orbitals in a d subshell is
    5
  11. What is the name given to the statement "the most stable arrangement of electrons in orbitals of equal energy is the one in which the number of electrons with the same spin is maximized"?
    Hund's rule
  12. The orbital diagram for a ground-state nitrogen atom is
    • (2) arrow 1s
    • (2) arrow 2s
    • (3) single arrow 2p
  13. The orbital diagram for a ground state oxygen atom is
    • 2 double arrow-1s
    • 2 double arrow-2s
    • 2 double arrow + 2 single arrow -2p
  14. Which ground state atom has an electron configuration described by the following orbital diagram?
    [Ar] 4s2 3d10 4p4
    Selenium
  15. How many unpaired electrons does a ground state atom of sulfur have?
    2
  16. Which element has the following ground state electron configuration?
    1s2 2s2 2p6 3s2
    Mg
  17. which of these choices is the general electron configuration for the outermost electrons of elements in the alkaline earth group?
    Ns2
  18. The general electron configuration for noble gas atoms is
    ns2np6
  19. Select the correct electron configuration for sulfur (Z=16)
    1s2 2s2 2p6 3s2 3p4
  20. The electronic structure 1s2 2s2 2p6 3s2 3p6 4s2 3d8 refers to the ground state of
    Ni
  21. Which of the elements listed below has the greatest atomic radius?
    Al
  22. Which of these elements has the highest first ionization energy?
    As
  23. Which ion is isoelectronic with Ar?
    Ca2+
  24. Which of these choices is the electron configuration of the iron (III) ion?
    [Ar] 3d5
  25. which of these compounds is a basic oxide?
    CaO

    Metal oxides-basic
  26. A nonpolar covalent bon (ie..pure covalent) would form in which of these pairs of atoms?
    Br--Br
  27. What types of elements undergo ionic bonding?
    A nonmetal and a metal
  28. Which of these atoms is the most electronegative?
    P
  29. Arrange aluminum, nitrogen, phosphorus and indium in order of increasing electronegativity?
    In<Al<P<N
  30. Which one of these elements is a transition element?
    Fe

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