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CHEM 110 Midterm: A past midterm

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tanscorpion506
28 Sep 2011
School
McGill University
Department
Chemistry
Course
CHEM 110
Professor
Bryan Sanctuary

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CHEM 110 Full Course Notes
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CHEM 110 Full Course Notes
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Document Summary

Chemistry 110 midterm 1 october 11, 2005: the element seaborgium (sg) has z=106. Chemistry 110 midterm 1 october 11, 2005: the workfunction for na is 2. 70 ev, for mg is 3. 66 ev, and for cs is 2. 14 ev. Chemistry 110 midterm 1 october 11, 2005: [xe]f145d10 6s1 is the ground state electronic configuration of which species, pb2, hg, pt, au, tl, the element seaborgium (sg) has z=106. What is the ninitial value for the higher energy orbit (i. e. what is ni): 4, 3, 1, 2, none of the other four answers. Chemistry 110 midterm 1 october 11, 2005: assume that we conduct a stern gerlach type experiment by passing a beam of cobalt (co) atoms and zinc (zn) atoms simultaneously through an external magnetic field. What would be the ionization energy for this species in this case? (1ev = 1. 609 x 10-19 j: 138. 7 ev, none of the other four answers, 216. 7 ev, 2. 167 ev, 8. 667 ev.

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Related Questions


1) What are the possible orbitals for n=3?

  1. s, p, d
  2. s, p, d, f
  3. s
  4. s, p

 

2) What value of ℓ is represented by a d orbital?  

  1. 1
  2. 2  
  3. 0
  4. 3

 

3) How many orbitals are contained in the third principal level (n=3) of a given atom?

  1. 9
  2. 3
  3. 18
  4. 7
  5. 5

 

4) Which of the following statements is TRUE?

  1. The principal quantum number (n) describes the shape of an orbital.
  2. The angular momentum quantum number (ℓ) describes the size and energy associated with an orbital
  3. The magnetic quantum number (mℓ) describes the orientation of the orbital.
  4. An orbital is a path that an electron follows during its movement in an atom
  5. All of the above are true

 

5) Which of the following transitions represents the emission of a photon with the largest energy?

  1. n=2 to n=1
  2. n=3 to n=1
  3. n=6 to n=4
  4. n=1 to n=4
  5. n=2 to n=4

 

6) Choose the transition (in a hydrogen atom) below that represents the absorption of the shortest wavelength photon.

  1. n=1 to n=2
  2. n=2 to n=3
  3. n=4 to n=5
  4. n=6 to n=3
  5. n=3 to n=1

 

7) Each of the following sets of quantum numbers is supposed to specify an orbital. Choose the one set of quantum numbers that does not contain an error.

  1. n=2, ℓ =2, mℓ= +1
  2. n=2, ℓ=2, mℓ= 0
  3. n=3, ℓ=2, mℓ = -3
  4. n=4, ℓ=3, mℓ= -2
  5. n=4, ℓ=2, mℓ= +4

 

8) The element that corresponds to the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1 3d5 is:

  1. titanium
  2. vanadium
  3. chromium
  4. manganese
  5. iron

 

9) Give the ground-state electron configuration for I.

  1. [Kr] 5s2 4d10 5p6
  2. [Kr] 5s2 4d10 5p5
  3. [Kr] 4d10 5p6
  4. [Kr] 5s2 5p6
  5. [Kr] 5s2 5d10 5p6

 

10) Place the following elements in order of increasing atomic radius

            P                      Ba                    Cl

  1. Ba < P < Cl
  2. P < Cl < Ba
  3. Cl < P < Ba
  4. Cl < Ba < P
  5. Ba < Cl < P

 

help which of these is true and which are false?