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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.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. Paramagnetism
Determined by synthetic conditions
Allows AC to be converted to DC
Excess electrons form a donor band close in energy to the conduction band
Magnetic moment = v(n*(n+2))

2. Transistor
Magnetic moment = v(n*(n+2))
Use low amount of current to regulate large amount
N=n; n+4; n+6
An atom has been displaced to another site

3. Intrinsic defect
Role of Lewis base in coordination chemistry
Determined by thermodynamics (Increased entropy)
4/sqrt(3) * r
N=n; n+4; n+6

4. Frenkel defect
Role of Lewis base in coordination chemistry
Conductivity increases with T
An atom has been displaced to another site
A

5. Atomic Number
Z
Excess electrons form a donor band close in energy to the conduction band
Electron holes are formed by promotion of valence band electrons to the acceptor band
Determined by thermodynamics (Increased entropy)

6. Larger difference in atomic radii
More soluble
A
An atom has been displaced to another site
4/sqrt(2) * r

7. Mass Number
Recovered by electrolysis of molten salt
Insulator which is doped with other elements
A
Use low amount of current to regulate large amount

8. Closo-; nido-; arachno- boranes
Role of Lewis base in coordination chemistry
Electron holes are formed by promotion of valence band electrons to the acceptor band
(1.33x10^-13)* ³v(A)
N=n; n+4; n+6

9. Ferrous
Recovered by electrolysis of molten salt
Insulator which is doped with other elements
(1.33x10^-13)* ³v(A)
Fe(II)

10. Alkali metals
(1.33x10^-13)* ³v(A)
Recovered by electrolysis of molten salt
Role of Lewis base in coordination chemistry
An atom is missing from its usual site

11. p-n junction
# of atoms of a ligand attached to a metal atom
Recovered by electrolysis of molten salt
Allows AC to be converted to DC
Involved in biological methyl transfer

12. Conduction band
Excess electrons form a donor band close in energy to the conduction band
Use low amount of current to regulate large amount
Unfully occupied orbital - potentially overlapping
(1.33x10^-13)* ³v(A)

13. L.bcc
An atom has been displaced to another site
4/sqrt(3) * r
Insulator which is doped with other elements
Recovered by electrolysis of molten salt

14. Cobalamin
Electron holes are formed by promotion of valence band electrons to the acceptor band
Forms ammonia from nitrogen
Involved in biological methyl transfer
Contain freely moving electrons

15. Schottky defect
Contain freely moving electrons
Recovered by electrolysis of molten salt
An atom is missing from its usual site
Determined by synthetic conditions

16. Valence Band
Contain freely moving electrons
Excess electrons form a donor band close in energy to the conduction band
Unfully occupied orbital - potentially overlapping
Use low amount of current to regulate large amount

17. Nuclear Radius
Allows AC to be converted to DC
A
(1.33x10^-13)* ³v(A)
Forms ammonia from nitrogen

18. Semiconductor
Conductivity increases with T
Determined by thermodynamics (Increased entropy)
Excess electrons form a donor band close in energy to the conduction band
Insulator which is doped with other elements

19. L.fcc
More soluble
Use low amount of current to regulate large amount
Z
4/sqrt(2) * r

20. Ligand / chelator
(1.33x10^-13)* ³v(A)
Insulator which is doped with other elements
Magnetic moment = v(n*(n+2))
Role of Lewis base in coordination chemistry

21. Hapticity
# of atoms of a ligand attached to a metal atom
Determined by synthetic conditions
A
4/sqrt(3) * r

22. Extrinsic semiconductor
Allows AC to be converted to DC
Insulator which is doped with other elements
Role of Lewis base in coordination chemistry
Conductivity increases with T

23. Haber Process
A
Excess electrons form a donor band close in energy to the conduction band
Unfully occupied orbital - potentially overlapping
Forms ammonia from nitrogen

24. p-type conductivity
Recovered by electrolysis of molten salt
Role of Lewis base in coordination chemistry
# of atoms of a ligand attached to a metal atom
Electron holes are formed by promotion of valence band electrons to the acceptor band

25. n-type conductivity
Contain freely moving electrons
An atom is missing from its usual site
Excess electrons form a donor band close in energy to the conduction band
An atom has been displaced to another site

26. Extrinsic defect
Determined by synthetic conditions
Use low amount of current to regulate large amount
Determined by thermodynamics (Increased entropy)
(1.33x10^-13)* ³v(A)