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

2. Paramagnetism
Magnetic moment = v(n*(n+2))
Insulator which is doped with other elements
A
Forms ammonia from nitrogen

3. Intrinsic defect
Determined by thermodynamics (Increased entropy)
Allows AC to be converted to DC
4/sqrt(3) * r
Recovered by electrolysis of molten salt

4. n-type conductivity
Magnetic moment = v(n*(n+2))
Electron holes are formed by promotion of valence band electrons to the acceptor band
Contain freely moving electrons
Excess electrons form a donor band close in energy to the conduction band

5. Atomic Number
Use low amount of current to regulate large amount
Z
4/sqrt(2) * r
A

6. Semiconductor
Conductivity increases with T
An atom is missing from its usual site
More soluble
An atom has been displaced to another site

7. Conduction band
4/sqrt(2) * r
Forms ammonia from nitrogen
(1.33x10^-13)* ³v(A)
Unfully occupied orbital - potentially overlapping

8. Haber Process
Forms ammonia from nitrogen
Conductivity increases with T
Contain freely moving electrons
Fe(II)

9. Extrinsic semiconductor
# of atoms of a ligand attached to a metal atom
An atom has been displaced to another site
Z
Insulator which is doped with other elements

10. Valence Band
Contain freely moving electrons
# of atoms of a ligand attached to a metal atom
Involved in biological methyl transfer
An atom has been displaced to another site

11. Ferrous
Determined by synthetic conditions
Involved in biological methyl transfer
Fe(II)
A

12. Larger difference in atomic radii
Involved in biological methyl transfer
Insulator which is doped with other elements
Determined by thermodynamics (Increased entropy)
More soluble

13. Extrinsic defect
Determined by synthetic conditions
Involved in biological methyl transfer
Electron holes are formed by promotion of valence band electrons to the acceptor band
Z

14. L.bcc
Magnetic moment = v(n*(n+2))
(1.33x10^-13)* ³v(A)
An atom is missing from its usual site
4/sqrt(3) * r

15. p-type conductivity
Electron holes are formed by promotion of valence band electrons to the acceptor band
Recovered by electrolysis of molten salt
Insulator which is doped with other elements
# of atoms of a ligand attached to a metal atom

16. Cobalamin
Involved in biological methyl transfer
Magnetic moment = v(n*(n+2))
A
Role of Lewis base in coordination chemistry

17. L.fcc
Insulator which is doped with other elements
An atom is missing from its usual site
Determined by thermodynamics (Increased entropy)
4/sqrt(2) * r

18. Nuclear Radius
(1.33x10^-13)* ³v(A)
N=n; n+4; n+6
Fe(II)
Magnetic moment = v(n*(n+2))

19. Closo-; nido-; arachno- boranes
Forms ammonia from nitrogen
4/sqrt(2) * r
N=n; n+4; n+6
Insulator which is doped with other elements

20. Schottky defect
Z
4/sqrt(2) * r
N=n; n+4; n+6
An atom is missing from its usual site

21. Alkali metals
N=n; n+4; n+6
Recovered by electrolysis of molten salt
4/sqrt(2) * r
Involved in biological methyl transfer

22. Ligand / chelator
Recovered by electrolysis of molten salt
4/sqrt(2) * r
Role of Lewis base in coordination chemistry
Involved in biological methyl transfer

23. Frenkel defect
Determined by thermodynamics (Increased entropy)
Excess electrons form a donor band close in energy to the conduction band
(1.33x10^-13)* ³v(A)
An atom has been displaced to another site

24. Mass Number
Use low amount of current to regulate large amount
Involved in biological methyl transfer
Determined by thermodynamics (Increased entropy)
A

25. Hapticity
# of atoms of a ligand attached to a metal atom
N=n; n+4; n+6
Use low amount of current to regulate large amount
Unfully occupied orbital - potentially overlapping

26. Transistor
Magnetic moment = v(n*(n+2))
Use low amount of current to regulate large amount
Fe(II)
# of atoms of a ligand attached to a metal atom