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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
Determined by synthetic conditions
Recovered by electrolysis of molten salt
Magnetic moment = v(n*(n+2))
(1.33x10^-13)* ³v(A)

2. Larger difference in atomic radii
Allows AC to be converted to DC
Determined by thermodynamics (Increased entropy)
Recovered by electrolysis of molten salt
More soluble

3. Ligand / chelator
Involved in biological methyl transfer
Role of Lewis base in coordination chemistry
Magnetic moment = v(n*(n+2))
4/sqrt(3) * r

4. Haber Process
A
Role of Lewis base in coordination chemistry
Forms ammonia from nitrogen
Unfully occupied orbital - potentially overlapping

5. n-type conductivity
Excess electrons form a donor band close in energy to the conduction band
Role of Lewis base in coordination chemistry
Allows AC to be converted to DC
An atom has been displaced to another site

6. Atomic Number
Z
Role of Lewis base in coordination chemistry
Fe(II)
# of atoms of a ligand attached to a metal atom

7. Schottky defect
Conductivity increases with T
An atom is missing from its usual site
An atom has been displaced to another site
Magnetic moment = v(n*(n+2))

8. Hapticity
# of atoms of a ligand attached to a metal atom
Z
More soluble
Forms ammonia from nitrogen

9. Paramagnetism
Contain freely moving electrons
Magnetic moment = v(n*(n+2))
Fe(II)
Z

10. Closo-; nido-; arachno- boranes
Fe(II)
Role of Lewis base in coordination chemistry
N=n; n+4; n+6
Z

11. Nuclear Radius
Fe(II)
Determined by synthetic conditions
An atom is missing from its usual site
(1.33x10^-13)* ³v(A)

12. Frenkel defect
An atom is missing from its usual site
An atom has been displaced to another site
Unfully occupied orbital - potentially overlapping
Use low amount of current to regulate large amount

13. Intrinsic defect
More soluble
Determined by thermodynamics (Increased entropy)
Use low amount of current to regulate large amount
N=n; n+4; n+6

14. Mass Number
A
4/sqrt(2) * r
Unfully occupied orbital - potentially overlapping
Recovered by electrolysis of molten salt

15. Conduction band
An atom has been displaced to another site
Recovered by electrolysis of molten salt
Unfully occupied orbital - potentially overlapping
4/sqrt(2) * r

16. Transistor
Unfully occupied orbital - potentially overlapping
An atom is missing from its usual site
N=n; n+4; n+6
Use low amount of current to regulate large amount

17. Cobalamin
N=n; n+4; n+6
Involved in biological methyl transfer
Conductivity increases with T
(1.33x10^-13)* ³v(A)

18. L.fcc
Forms ammonia from nitrogen
Allows AC to be converted to DC
Electron holes are formed by promotion of valence band electrons to the acceptor band
4/sqrt(2) * r

19. Valence Band
More soluble
Contain freely moving electrons
(1.33x10^-13)* ³v(A)
Allows AC to be converted to DC

20. p-type conductivity
Excess electrons form a donor band close in energy to the conduction band
Involved in biological methyl transfer
4/sqrt(2) * r
Electron holes are formed by promotion of valence band electrons to the acceptor band

21. L.bcc
An atom is missing from its usual site
Recovered by electrolysis of molten salt
Excess electrons form a donor band close in energy to the conduction band
4/sqrt(3) * r

22. Extrinsic semiconductor
Insulator which is doped with other elements
Determined by thermodynamics (Increased entropy)
Electron holes are formed by promotion of valence band electrons to the acceptor band
Contain freely moving electrons

23. Ferrous
4/sqrt(3) * r
Magnetic moment = v(n*(n+2))
Fe(II)
Unfully occupied orbital - potentially overlapping

24. Semiconductor
Determined by thermodynamics (Increased entropy)
Forms ammonia from nitrogen
Conductivity increases with T
Fe(II)

25. Alkali metals
4/sqrt(2) * r
More soluble
Recovered by electrolysis of molten salt
An atom is missing from its usual site

26. p-n junction
Allows AC to be converted to DC
Electron holes are formed by promotion of valence band electrons to the acceptor band
Role of Lewis base in coordination chemistry
Contain freely moving electrons