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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. Intrinsic defect
Excess electrons form a donor band close in energy to the conduction band
Determined by thermodynamics (Increased entropy)
Forms ammonia from nitrogen
# of atoms of a ligand attached to a metal atom

2. Hapticity
Involved in biological methyl transfer
# of atoms of a ligand attached to a metal atom
More soluble
Magnetic moment = v(n*(n+2))

3. L.fcc
Electron holes are formed by promotion of valence band electrons to the acceptor band
4/sqrt(2) * r
Use low amount of current to regulate large amount
Allows AC to be converted to DC

4. Transistor
Use low amount of current to regulate large amount
Magnetic moment = v(n*(n+2))
Electron holes are formed by promotion of valence band electrons to the acceptor band
Role of Lewis base in coordination chemistry

5. Extrinsic semiconductor
4/sqrt(3) * r
Role of Lewis base in coordination chemistry
Insulator which is doped with other elements
N=n; n+4; n+6

6. Atomic Number
A
Z
Contain freely moving electrons
(1.33x10^-13)* ³v(A)

7. Closo-; nido-; arachno- boranes
Excess electrons form a donor band close in energy to the conduction band
Role of Lewis base in coordination chemistry
Electron holes are formed by promotion of valence band electrons to the acceptor band
N=n; n+4; n+6

8. Schottky defect
Determined by thermodynamics (Increased entropy)
(1.33x10^-13)* ³v(A)
An atom is missing from its usual site
Recovered by electrolysis of molten salt

9. Cobalamin
4/sqrt(2) * r
Involved in biological methyl transfer
Z
# of atoms of a ligand attached to a metal atom

10. Ferrous
Z
Fe(II)
Determined by synthetic conditions
A

11. Frenkel defect
An atom has been displaced to another site
Electron holes are formed by promotion of valence band electrons to the acceptor band
Conductivity increases with T
Role of Lewis base in coordination chemistry

12. p-n junction
Allows AC to be converted to DC
N=n; n+4; n+6
Fe(II)
Forms ammonia from nitrogen

13. Semiconductor
An atom is missing from its usual site
Conductivity increases with T
Z
More soluble

14. Haber Process
Recovered by electrolysis of molten salt
Forms ammonia from nitrogen
An atom is missing from its usual site
A

15. Paramagnetism
Involved in biological methyl transfer
Magnetic moment = v(n*(n+2))
Use low amount of current to regulate large amount
N=n; n+4; n+6

16. Nuclear Radius
(1.33x10^-13)* ³v(A)
4/sqrt(2) * r
Determined by synthetic conditions
Conductivity increases with T

17. p-type conductivity
Electron holes are formed by promotion of valence band electrons to the acceptor band
4/sqrt(2) * r
Excess electrons form a donor band close in energy to the conduction band
Allows AC to be converted to DC

18. Conduction band
Unfully occupied orbital - potentially overlapping
Determined by thermodynamics (Increased entropy)
# of atoms of a ligand attached to a metal atom
Involved in biological methyl transfer

19. Alkali metals
Recovered by electrolysis of molten salt
4/sqrt(3) * r
Fe(II)
N=n; n+4; n+6

20. Larger difference in atomic radii
Unfully occupied orbital - potentially overlapping
More soluble
Fe(II)
Magnetic moment = v(n*(n+2))

21. Mass Number
A
Recovered by electrolysis of molten salt
Forms ammonia from nitrogen
Determined by synthetic conditions

22. L.bcc
4/sqrt(3) * r
More soluble
# of atoms of a ligand attached to a metal atom
Use low amount of current to regulate large amount

23. n-type conductivity
Allows AC to be converted to DC
Determined by synthetic conditions
Use low amount of current to regulate large amount
Excess electrons form a donor band close in energy to the conduction band

24. Ligand / chelator
Role of Lewis base in coordination chemistry
Unfully occupied orbital - potentially overlapping
Z
Contain freely moving electrons

25. Valence Band
N=n; n+4; n+6
Forms ammonia from nitrogen
Contain freely moving electrons
An atom has been displaced to another site

26. Extrinsic defect
Insulator which is doped with other elements
Determined by synthetic conditions
(1.33x10^-13)* ³v(A)
Z