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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. Frenkel defect
Involved in biological methyl transfer
A
Magnetic moment = v(n*(n+2))
An atom has been displaced to another site

2. Ligand / chelator
N=n; n+4; n+6
Role of Lewis base in coordination chemistry
More soluble
4/sqrt(2) * r

3. Haber Process
Conductivity increases with T
An atom has been displaced to another site
Magnetic moment = v(n*(n+2))
Forms ammonia from nitrogen

4. L.fcc
Use low amount of current to regulate large amount
4/sqrt(2) * r
N=n; n+4; n+6
More soluble

5. Alkali metals
4/sqrt(3) * r
Insulator which is doped with other elements
Recovered by electrolysis of molten salt
Determined by thermodynamics (Increased entropy)

6. Paramagnetism
Role of Lewis base in coordination chemistry
Use low amount of current to regulate large amount
Magnetic moment = v(n*(n+2))
N=n; n+4; n+6

7. Transistor
Involved in biological methyl transfer
Use low amount of current to regulate large amount
Fe(II)
A

8. Cobalamin
Contain freely moving electrons
Involved in biological methyl transfer
(1.33x10^-13)* ³v(A)
Recovered by electrolysis of molten salt

9. Larger difference in atomic radii
Excess electrons form a donor band close in energy to the conduction band
Fe(II)
Involved in biological methyl transfer
More soluble

10. Semiconductor
An atom has been displaced to another site
Fe(II)
Conductivity increases with T
Determined by synthetic conditions

11. Mass Number
A
Involved in biological methyl transfer
Use low amount of current to regulate large amount
(1.33x10^-13)* ³v(A)

12. Intrinsic defect
(1.33x10^-13)* ³v(A)
Determined by thermodynamics (Increased entropy)
Magnetic moment = v(n*(n+2))
Insulator which is doped with other elements

13. Ferrous
Fe(II)
Insulator which is doped with other elements
Allows AC to be converted to DC
Determined by thermodynamics (Increased entropy)

14. p-n junction
Involved in biological methyl transfer
# of atoms of a ligand attached to a metal atom
Use low amount of current to regulate large amount
Allows AC to be converted to DC

15. Conduction band
Unfully occupied orbital - potentially overlapping
Contain freely moving electrons
Excess electrons form a donor band close in energy to the conduction band
Determined by thermodynamics (Increased entropy)

16. L.bcc
Use low amount of current to regulate large amount
Excess electrons form a donor band close in energy to the conduction band
A
4/sqrt(3) * r

17. Extrinsic defect
Determined by synthetic conditions
Magnetic moment = v(n*(n+2))
Allows AC to be converted to DC
Role of Lewis base in coordination chemistry

18. Closo-; nido-; arachno- boranes
N=n; n+4; n+6
Involved in biological methyl transfer
Forms ammonia from nitrogen
Fe(II)

19. p-type conductivity
Involved in biological methyl transfer
Electron holes are formed by promotion of valence band electrons to the acceptor band
(1.33x10^-13)* ³v(A)
Insulator which is doped with other elements

20. Valence Band
Conductivity increases with T
Contain freely moving electrons
Magnetic moment = v(n*(n+2))
Role of Lewis base in coordination chemistry

21. Hapticity
Allows AC to be converted to DC
Recovered by electrolysis of molten salt
Z
# of atoms of a ligand attached to a metal atom

22. Atomic Number
A
Excess electrons form a donor band close in energy to the conduction band
Z
Unfully occupied orbital - potentially overlapping

23. Extrinsic semiconductor
Insulator which is doped with other elements
Z
# of atoms of a ligand attached to a metal atom
More soluble

24. Schottky defect
# of atoms of a ligand attached to a metal atom
An atom has been displaced to another site
Role of Lewis base in coordination chemistry
An atom is missing from its usual site

25. n-type conductivity
A
4/sqrt(3) * r
Determined by synthetic conditions
Excess electrons form a donor band close in energy to the conduction band

26. Nuclear Radius
(1.33x10^-13)* ³v(A)
Insulator which is doped with other elements
N=n; n+4; n+6
Determined by synthetic conditions