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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. Haber Process
Contain freely moving electrons
Z
Forms ammonia from nitrogen
An atom has been displaced to another site

2. Conduction band
Role of Lewis base in coordination chemistry
Electron holes are formed by promotion of valence band electrons to the acceptor band
Unfully occupied orbital - potentially overlapping
Involved in biological methyl transfer

3. Frenkel defect
Determined by thermodynamics (Increased entropy)
4/sqrt(3) * r
N=n; n+4; n+6
An atom has been displaced to another site

4. Extrinsic semiconductor
Fe(II)
Insulator which is doped with other elements
Involved in biological methyl transfer
An atom is missing from its usual site

5. L.fcc
Unfully occupied orbital - potentially overlapping
4/sqrt(2) * r
Fe(II)
Electron holes are formed by promotion of valence band electrons to the acceptor band

6. Nuclear Radius
An atom has been displaced to another site
(1.33x10^-13)* ³v(A)
Allows AC to be converted to DC
Insulator which is doped with other elements

7. Atomic Number
4/sqrt(3) * r
Z
An atom is missing from its usual site
Forms ammonia from nitrogen

8. p-n junction
Allows AC to be converted to DC
Magnetic moment = v(n*(n+2))
4/sqrt(2) * r
Excess electrons form a donor band close in energy to the conduction band

9. Ferrous
An atom has been displaced to another site
Use low amount of current to regulate large amount
Fe(II)
Conductivity increases with T

10. n-type conductivity
Contain freely moving electrons
Electron holes are formed by promotion of valence band electrons to the acceptor band
Z
Excess electrons form a donor band close in energy to the conduction band

11. Hapticity
Magnetic moment = v(n*(n+2))
# of atoms of a ligand attached to a metal atom
4/sqrt(3) * r
N=n; n+4; n+6

12. L.bcc
Unfully occupied orbital - potentially overlapping
An atom has been displaced to another site
4/sqrt(3) * r
More soluble

13. Cobalamin
Conductivity increases with T
Involved in biological methyl transfer
# of atoms of a ligand attached to a metal atom
4/sqrt(2) * r

14. Closo-; nido-; arachno- boranes
Role of Lewis base in coordination chemistry
N=n; n+4; n+6
Unfully occupied orbital - potentially overlapping
4/sqrt(2) * r

15. Mass Number
A
An atom is missing from its usual site
Fe(II)
Z

16. Extrinsic defect
Determined by synthetic conditions
Electron holes are formed by promotion of valence band electrons to the acceptor band
Use low amount of current to regulate large amount
Determined by thermodynamics (Increased entropy)

17. Semiconductor
Conductivity increases with T
Role of Lewis base in coordination chemistry
Use low amount of current to regulate large amount
Involved in biological methyl transfer

18. Alkali metals
An atom is missing from its usual site
4/sqrt(3) * r
Recovered by electrolysis of molten salt
Contain freely moving electrons

19. Transistor
(1.33x10^-13)* ³v(A)
Z
4/sqrt(2) * r
Use low amount of current to regulate large amount

20. Ligand / chelator
# of atoms of a ligand attached to a metal atom
A
An atom is missing from its usual site
Role of Lewis base in coordination chemistry

21. Larger difference in atomic radii
Conductivity increases with T
4/sqrt(3) * r
More soluble
Electron holes are formed by promotion of valence band electrons to the acceptor band

22. p-type conductivity
4/sqrt(3) * r
# of atoms of a ligand attached to a metal atom
Insulator which is doped with other elements
Electron holes are formed by promotion of valence band electrons to the acceptor band

23. Schottky defect
Magnetic moment = v(n*(n+2))
An atom is missing from its usual site
Allows AC to be converted to DC
Unfully occupied orbital - potentially overlapping

24. Valence Band
Contain freely moving electrons
An atom has been displaced to another site
Determined by thermodynamics (Increased entropy)
An atom is missing from its usual site

25. Intrinsic defect
4/sqrt(2) * r
Use low amount of current to regulate large amount
Determined by thermodynamics (Increased entropy)
Fe(II)

26. Paramagnetism
Forms ammonia from nitrogen
(1.33x10^-13)* ³v(A)
Unfully occupied orbital - potentially overlapping
Magnetic moment = v(n*(n+2))