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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.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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
A
N=n; n+4; n+6
Determined by synthetic conditions
Allows AC to be converted to DC

2. n-type conductivity
Use low amount of current to regulate large amount
4/sqrt(2) * r
Unfully occupied orbital - potentially overlapping
Excess electrons form a donor band close in energy to the conduction band

3. p-n junction
Involved in biological methyl transfer
Role of Lewis base in coordination chemistry
Forms ammonia from nitrogen
Allows AC to be converted to DC

4. L.fcc
Excess electrons form a donor band close in energy to the conduction band
More soluble
Forms ammonia from nitrogen
4/sqrt(2) * r

5. Transistor
Use low amount of current to regulate large amount
Role of Lewis base in coordination chemistry
An atom is missing from its usual site
Fe(II)

6. Cobalamin
An atom is missing from its usual site
Involved in biological methyl transfer
Role of Lewis base in coordination chemistry
A

7. Alkali metals
Recovered by electrolysis of molten salt
A
Determined by thermodynamics (Increased entropy)
Use low amount of current to regulate large amount

8. Atomic Number
Z
Role of Lewis base in coordination chemistry
An atom is missing from its usual site
4/sqrt(3) * r

9. L.bcc
Insulator which is doped with other elements
4/sqrt(3) * r
Contain freely moving electrons
Determined by thermodynamics (Increased entropy)

10. Valence Band
Recovered by electrolysis of molten salt
4/sqrt(3) * r
N=n; n+4; n+6
Contain freely moving electrons

11. Ligand / chelator
Determined by thermodynamics (Increased entropy)
Role of Lewis base in coordination chemistry
Use low amount of current to regulate large amount
Unfully occupied orbital - potentially overlapping

12. Extrinsic defect
Magnetic moment = v(n*(n+2))
An atom is missing from its usual site
# of atoms of a ligand attached to a metal atom
Determined by synthetic conditions

13. p-type conductivity
Electron holes are formed by promotion of valence band electrons to the acceptor band
Forms ammonia from nitrogen
Allows AC to be converted to DC
Contain freely moving electrons

14. Paramagnetism
Allows AC to be converted to DC
Determined by thermodynamics (Increased entropy)
An atom has been displaced to another site
Magnetic moment = v(n*(n+2))

15. Haber Process
Contain freely moving electrons
Magnetic moment = v(n*(n+2))
Forms ammonia from nitrogen
Electron holes are formed by promotion of valence band electrons to the acceptor band

16. Extrinsic semiconductor
A
Insulator which is doped with other elements
More soluble
(1.33x10^-13)* ³v(A)

17. Ferrous
Electron holes are formed by promotion of valence band electrons to the acceptor band
Recovered by electrolysis of molten salt
Conductivity increases with T
Fe(II)

18. Intrinsic defect
Unfully occupied orbital - potentially overlapping
Use low amount of current to regulate large amount
A
Determined by thermodynamics (Increased entropy)

19. Semiconductor
Conductivity increases with T
Z
An atom has been displaced to another site
Magnetic moment = v(n*(n+2))

20. Larger difference in atomic radii
Allows AC to be converted to DC
More soluble
An atom is missing from its usual site
Involved in biological methyl transfer

21. Schottky defect
An atom is missing from its usual site
Determined by thermodynamics (Increased entropy)
Allows AC to be converted to DC
(1.33x10^-13)* ³v(A)

22. Hapticity
Recovered by electrolysis of molten salt
An atom has been displaced to another site
# of atoms of a ligand attached to a metal atom
4/sqrt(2) * r

23. Nuclear Radius
Insulator which is doped with other elements
(1.33x10^-13)* ³v(A)
Use low amount of current to regulate large amount
Determined by synthetic conditions

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

25. Frenkel defect
An atom has been displaced to another site
Conductivity increases with T
# of atoms of a ligand attached to a metal atom
Excess electrons form a donor band close in energy to the conduction band

26. Mass Number
Electron holes are formed by promotion of valence band electrons to the acceptor band
A
Excess electrons form a donor band close in energy to the conduction band
Allows AC to be converted to DC