Term
| calculate the relative atomic mass of an element W with 60% of 69W and 40% of 71W |
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Definition
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Term
| state the name and mass number of the isotope relative to which all atomic masses are measured |
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Definition
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Term
| state the electron arrangements of Si and P3- |
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Definition
Si 1s2 2s2p63s2p2
P3- 1s22s2p63s2p6 |
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Term
| state all the processes in a mass spectrometer: |
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Definition
| vaporization, ionization, acceleration, deflection, detection |
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Term
| how does ionization work? (mass spectrometer) |
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Definition
| the atoms are hit with high energy electrons which knock out electrons producing positively charged ions |
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Term
| how does deflection work? (mass spectrometer) |
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Definition
ions are deflected by a magnetic field placed at right angles to their path
deflection is proportionate to the charge/mass ratio |
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Term
| how does acceleration work? (mass spectrometer) |
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Definition
| positive ions are attracted to negatively charged plates by an electric field |
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Term
calculate the relative atomic mass of germanium given these samples:
70Ge: 22.60 %
72Ge: 25.45 %
74Ge: 36.73 %
76Ge: 15.22 % |
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Definition
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Term
| list four useful applications of radioactive isotopes: |
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Definition
| C14: radioactive dating C60: radiotherapy I131: medical tracing I125: used to treat cancers |
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Term
| how can the mass spectrometer be used to determine relative atomic mass using the C12 scale? |
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Definition
| using a mass spectra, the masses of the different isotopes relative to carbon can be graphed with their individual abundance |
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Term
| what is the difference between a continous spectrum and line spectrum? |
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Definition
continuous spectrum comes from light through a prism, and is one steady stream of color
a line spectrum comes from energized electrons leaving their energy levels |
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Term
| state four physical properties that are different for isotopes of an element. |
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Definition
| mass, density, melting point, boiling point |
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Term
| determine the full electron configuration of a Fe 3+ ion |
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Definition
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