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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. Closo-; nido-; arachno- boranes
Forms ammonia from nitrogen
4/sqrt(2) * r
N=n; n+4; n+6
A

2. Extrinsic semiconductor
Forms ammonia from nitrogen
Recovered by electrolysis of molten salt
Insulator which is doped with other elements
Electron holes are formed by promotion of valence band electrons to the acceptor band

3. Paramagnetism
Unfully occupied orbital - potentially overlapping
A
Allows AC to be converted to DC
Magnetic moment = v(n*(n+2))

4. Transistor
Role of Lewis base in coordination chemistry
Z
An atom is missing from its usual site
Use low amount of current to regulate large amount

5. Frenkel defect
Magnetic moment = v(n*(n+2))
An atom has been displaced to another site
# of atoms of a ligand attached to a metal atom
Insulator which is doped with other elements

6. Mass Number
Magnetic moment = v(n*(n+2))
4/sqrt(3) * r
A
More soluble

7. L.bcc
Magnetic moment = v(n*(n+2))
# of atoms of a ligand attached to a metal atom
Role of Lewis base in coordination chemistry
4/sqrt(3) * r

8. Conduction band
Role of Lewis base in coordination chemistry
Unfully occupied orbital - potentially overlapping
Magnetic moment = v(n*(n+2))
Electron holes are formed by promotion of valence band electrons to the acceptor band

9. L.fcc
Conductivity increases with T
4/sqrt(2) * r
An atom is missing from its usual site
Fe(II)

10. p-n junction
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))
More soluble

11. n-type conductivity
N=n; n+4; n+6
Insulator which is doped with other elements
Allows AC to be converted to DC
Excess electrons form a donor band close in energy to the conduction band

12. Alkali metals
Magnetic moment = v(n*(n+2))
Contain freely moving electrons
4/sqrt(2) * r
Recovered by electrolysis of molten salt

13. Cobalamin
Z
Fe(II)
Involved in biological methyl transfer
4/sqrt(2) * r

14. Valence Band
Contain freely moving electrons
Unfully occupied orbital - potentially overlapping
A
Involved in biological methyl transfer

15. p-type conductivity
Magnetic moment = v(n*(n+2))
Use low amount of current to regulate large amount
Electron holes are formed by promotion of valence band electrons to the acceptor band
Determined by thermodynamics (Increased entropy)

16. Schottky defect
Unfully occupied orbital - potentially overlapping
An atom is missing from its usual site
Contain freely moving electrons
Role of Lewis base in coordination chemistry

17. Intrinsic defect
# of atoms of a ligand attached to a metal atom
Determined by thermodynamics (Increased entropy)
(1.33x10^-13)* ³v(A)
An atom has been displaced to another site

18. Hapticity
N=n; n+4; n+6
An atom is missing from its usual site
Determined by synthetic conditions
# of atoms of a ligand attached to a metal atom

19. Ferrous
Fe(II)
Contain freely moving electrons
Magnetic moment = v(n*(n+2))
Forms ammonia from nitrogen

20. Ligand / chelator
Role of Lewis base in coordination chemistry
(1.33x10^-13)* ³v(A)
Determined by synthetic conditions
# of atoms of a ligand attached to a metal atom

21. Atomic Number
4/sqrt(3) * r
Role of Lewis base in coordination chemistry
N=n; n+4; n+6
Z

22. Larger difference in atomic radii
4/sqrt(2) * r
A
More soluble
# of atoms of a ligand attached to a metal atom

23. Nuclear Radius
An atom is missing from its usual site
Determined by synthetic conditions
(1.33x10^-13)* ³v(A)
An atom has been displaced to another site

24. Haber Process
Contain freely moving electrons
Forms ammonia from nitrogen
Recovered by electrolysis of molten salt
N=n; n+4; n+6

25. Extrinsic defect
Unfully occupied orbital - potentially overlapping
Use low amount of current to regulate large amount
Determined by synthetic conditions
An atom has been displaced to another site

26. Semiconductor
An atom is missing from its usual site
Conductivity increases with T
Recovered by electrolysis of molten salt
Insulator which is doped with other elements