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Chem104-Spring04-mt1-Cramer-soln

Chem104-Spring04-mt1-Cramer-soln - Your name Grade this...

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Your name __________________ Grade this page___ 1 Chem 104A - Midterm I Answer Key closed text, closed notes, no calculators There are 70 total points. General advice - if you are stumped by one problem, move on to finish other problems and come back later if time permits. You may use the whole class period. A. General (10 points) 2 Points Each ____ True or false (Enter T or F on line) next to statement: __F__ 1. A 4p z orbital has two radial nodes and 2 angular nodes. It has one angular node – the xy plane. __F__ 2. If the principal quantum number is 3, the orbital shape quantum number (l) can be 0, 1, 2, 3, or 4. The orbital quantum number can only go as high as n-1=l=2; a 3d orbital. __F__ 3. The ratio of the ionization energy for He + to H is 2:1. The ionization energy goes as Z 2 , thus the ratio is 4:1. __F__ 4. The ground state of an atom comes from the term with the lowest multiplicity. highest multiplicity __F__ 5. A proper group always has an identity element and a zero element.
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