Atomic Structure Worksheet Page 16
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167. Calculate the energy change that would result from an electron in a Li atom changing from
n=5 to n=2? Would the wavelength of light associated with this change be visible? (Note:
the visible spectrum ranges from about380 nM to 760 nM.) Would energy be absorbed by
this change or emitted? (You may assume that the equations developed by Bohr for
hydrogen hold for lithium.)
Absorbed or Emitted (circle one)
Energy Change Calculations:
Wavelength Calculations
One step beyond (Extra Credit)
How much energy would be needed to cause the hydrogen atom to assume the size
referenced in question 6?
Twlight Zone (Extra Credit)
An unknown element was analyzed to determine its identity. From the data below
determine the identity of this element. If the data is inconclusive give the
possibilities of the element.
2+
1. The ion X
a was found to have no unparied electrons
32
2. The ion X
was found to have two unpaired electrons.
3. The element was representative, a weak conductor of electricity, and had a
metallic luster.
Chem II, Chapter 4, test#3
1997
page 3 of 3
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