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GRE Chemistry Inorganic

Instructions:

Answer 26 questions in 15 minutes.
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Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. L.fcc
4/sqrt(2) * r
Contain freely moving electrons
Recovered by electrolysis of molten salt
Use low amount of current to regulate large amount

2. Cobalamin
Recovered by electrolysis of molten salt
Involved in biological methyl transfer
Role of Lewis base in coordination chemistry
Forms ammonia from nitrogen

3. p-type conductivity
Determined by synthetic conditions
Determined by thermodynamics (Increased entropy)
Electron holes are formed by promotion of valence band electrons to the acceptor band
Conductivity increases with T

4. p-n junction
Z
Contain freely moving electrons
# of atoms of a ligand attached to a metal atom
Allows AC to be converted to DC

5. Paramagnetism
A
Recovered by electrolysis of molten salt
Magnetic moment = v(n*(n+2))
Insulator which is doped with other elements

6. Schottky defect
An atom has been displaced to another site
Recovered by electrolysis of molten salt
Z
An atom is missing from its usual site

7. Mass Number
An atom has been displaced to another site
A
Unfully occupied orbital - potentially overlapping
Forms ammonia from nitrogen

8. Atomic Number
Unfully occupied orbital - potentially overlapping
An atom has been displaced to another site
Recovered by electrolysis of molten salt
Z

9. Extrinsic semiconductor
Insulator which is doped with other elements
Excess electrons form a donor band close in energy to the conduction band
Contain freely moving electrons
An atom has been displaced to another site

10. Hapticity
Recovered by electrolysis of molten salt
Determined by synthetic conditions
4/sqrt(3) * r
# of atoms of a ligand attached to a metal atom

11. Semiconductor
Allows AC to be converted to DC
4/sqrt(2) * r
Magnetic moment = v(n*(n+2))
Conductivity increases with T

12. n-type conductivity
An atom is missing from its usual site
N=n; n+4; n+6
Excess electrons form a donor band close in energy to the conduction band
Determined by synthetic conditions

13. Transistor
Z
4/sqrt(2) * r
An atom is missing from its usual site
Use low amount of current to regulate large amount

14. Closo-; nido-; arachno- boranes
An atom is missing from its usual site
N=n; n+4; n+6
Magnetic moment = v(n*(n+2))
Involved in biological methyl transfer

15. Valence Band
Recovered by electrolysis of molten salt
Excess electrons form a donor band close in energy to the conduction band
Contain freely moving electrons
4/sqrt(2) * r

16. Larger difference in atomic radii
4/sqrt(3) * r
More soluble
Z
Allows AC to be converted to DC

17. Ligand / chelator
Use low amount of current to regulate large amount
Magnetic moment = v(n*(n+2))
Conductivity increases with T
Role of Lewis base in coordination chemistry

18. L.bcc
An atom has been displaced to another site
Electron holes are formed by promotion of valence band electrons to the acceptor band
A
4/sqrt(3) * r

19. Conduction band
Unfully occupied orbital - potentially overlapping
Magnetic moment = v(n*(n+2))
Fe(II)
Excess electrons form a donor band close in energy to the conduction band

20. Ferrous
Fe(II)
Forms ammonia from nitrogen
Insulator which is doped with other elements
Determined by thermodynamics (Increased entropy)

21. Frenkel defect
An atom has been displaced to another site
Fe(II)
Role of Lewis base in coordination chemistry
An atom is missing from its usual site

22. Extrinsic defect
Magnetic moment = v(n*(n+2))
Contain freely moving electrons
More soluble
Determined by synthetic conditions

23. Intrinsic defect
Determined by thermodynamics (Increased entropy)
Conductivity increases with T
Magnetic moment = v(n*(n+2))
N=n; n+4; n+6

24. Nuclear Radius
(1.33x10^-13)* ³v(A)
Unfully occupied orbital - potentially overlapping
N=n; n+4; n+6
4/sqrt(2) * r

25. Alkali metals
Insulator which is doped with other elements
Recovered by electrolysis of molten salt
Determined by synthetic conditions
Use low amount of current to regulate large amount

26. Haber Process
Forms ammonia from nitrogen
# of atoms of a ligand attached to a metal atom
Use low amount of current to regulate large amount
Role of Lewis base in coordination chemistry