c secure | http:/.1 20176 Exam 4.pdf . Download ”Info ×Close Papc 6. Atoens with

Question

c secure | http:/.1 20176 Exam 4.pdf . Download ”Info ×Close Papc 6. Atoens with unpaired electron spins exhibit paramagnetism they are attracted into a mapnetic field. On the other hand, atoms that have all electroa spins paired are repelled by amagnetic field, a property ealled diamagnetism. Considering only the electronie ground stare, should we expest to find more parsmagnetie or more diamagnetie elements on the periodie table Explain your reascning. 1B 110] . Match each quantum number ) with the properties it detines for an electroo in an atonmic orbital a. energy sublevel, orbital anguar momeutum, orbital shape b energy level, orbital size e electron spin angalar momentuam projection d. orbital sngular momentam projection, orbital orientation 8. On the axus below. draw shopes ofthe3dr, 2Paard 1s airns mtttal boundary surfaces. [5] 14 9. Explain why the anions are larger than the cations in an iscelectronic series. [10] 10. Which cation would you expect to bave the larger radius: Cu or Cuxpur coice. [S] 11/18/2017

Explanation / Answer

Q6

note that

"pure" elements --> same probaility to have 50% paired and 50%unpaired

the interesting part:

atoms will look to form octect rule, which is "filling up the orbital" up to e = 8 electrons in its valence shell

therefore, these species become diamagnetic

which implies that in real life, it is eaiser to find diamagnetic than paramagnetic species

choose then

diamagnetic > paramagnetic

Q7

a

energy sublevel --> l

orbital angular momentum --> l

orbital shape --> ml

b

energy level --> n

orbital size --> n

c

elesctron spin --> ms

d

orbital angular momentum projection --> l

orbital orientation --> ml

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