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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. Extrinsic defect
Forms ammonia from nitrogen
Determined by thermodynamics (Increased entropy)
Magnetic moment = v(n*(n+2))
Determined by synthetic conditions

2. Conduction band
Electron holes are formed by promotion of valence band electrons to the acceptor band
Unfully occupied orbital - potentially overlapping
Z
Excess electrons form a donor band close in energy to the conduction band

3. Ferrous
Magnetic moment = v(n*(n+2))
Excess electrons form a donor band close in energy to the conduction band
Fe(II)
Insulator which is doped with other elements

4. Atomic Number
Z
Recovered by electrolysis of molten salt
A
N=n; n+4; n+6

5. Cobalamin
Recovered by electrolysis of molten salt
Involved in biological methyl transfer
Allows AC to be converted to DC
Unfully occupied orbital - potentially overlapping

6. L.fcc
Recovered by electrolysis of molten salt
Electron holes are formed by promotion of valence band electrons to the acceptor band
4/sqrt(2) * r
Allows AC to be converted to DC

7. Ligand / chelator
An atom has been displaced to another site
Electron holes are formed by promotion of valence band electrons to the acceptor band
Role of Lewis base in coordination chemistry
Z

8. Alkali metals
Role of Lewis base in coordination chemistry
Insulator which is doped with other elements
Recovered by electrolysis of molten salt
Involved in biological methyl transfer

9. Closo-; nido-; arachno- boranes
Determined by thermodynamics (Increased entropy)
N=n; n+4; n+6
Conductivity increases with T
A

10. Larger difference in atomic radii
A
An atom has been displaced to another site
More soluble
Magnetic moment = v(n*(n+2))

11. L.bcc
4/sqrt(3) * r
Excess electrons form a donor band close in energy to the conduction band
Involved in biological methyl transfer
Contain freely moving electrons

12. Valence Band
A
4/sqrt(3) * r
Contain freely moving electrons
Forms ammonia from nitrogen

13. Intrinsic defect
An atom is missing from its usual site
Determined by thermodynamics (Increased entropy)
Involved in biological methyl transfer
Determined by synthetic conditions

14. Frenkel defect
Insulator which is doped with other elements
Allows AC to be converted to DC
Unfully occupied orbital - potentially overlapping
An atom has been displaced to another site

15. Nuclear Radius
(1.33x10^-13)* ³v(A)
Z
Use low amount of current to regulate large amount
Forms ammonia from nitrogen

16. n-type conductivity
Z
Excess electrons form a donor band close in energy to the conduction band
Fe(II)
An atom is missing from its usual site

17. p-type conductivity
More soluble
Involved in biological methyl transfer
# of atoms of a ligand attached to a metal atom
Electron holes are formed by promotion of valence band electrons to the acceptor band

18. Semiconductor
Involved in biological methyl transfer
Contain freely moving electrons
Conductivity increases with T
Recovered by electrolysis of molten salt

19. Schottky defect
Unfully occupied orbital - potentially overlapping
# of atoms of a ligand attached to a metal atom
Fe(II)
An atom is missing from its usual site

20. Extrinsic semiconductor
4/sqrt(3) * r
An atom is missing from its usual site
Role of Lewis base in coordination chemistry
Insulator which is doped with other elements

21. Paramagnetism
Recovered by electrolysis of molten salt
(1.33x10^-13)* ³v(A)
An atom is missing from its usual site
Magnetic moment = v(n*(n+2))

22. Haber Process
Conductivity increases with T
Forms ammonia from nitrogen
(1.33x10^-13)* ³v(A)
# of atoms of a ligand attached to a metal atom

23. p-n junction
Electron holes are formed by promotion of valence band electrons to the acceptor band
Forms ammonia from nitrogen
Allows AC to be converted to DC
Fe(II)

24. Hapticity
Recovered by electrolysis of molten salt
# of atoms of a ligand attached to a metal atom
Conductivity increases with T
An atom is missing from its usual site

25. Transistor
Contain freely moving electrons
Use low amount of current to regulate large amount
Determined by synthetic conditions
Insulator which is doped with other elements

26. Mass Number
A
4/sqrt(2) * r
Role of Lewis base in coordination chemistry
(1.33x10^-13)* ³v(A)