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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. Conduction band
Use low amount of current to regulate large amount
Unfully occupied orbital - potentially overlapping
Conductivity increases with T
Recovered by electrolysis of molten salt

2. Extrinsic defect
Unfully occupied orbital - potentially overlapping
Excess electrons form a donor band close in energy to the conduction band
Determined by synthetic conditions
# of atoms of a ligand attached to a metal atom

3. Larger difference in atomic radii
Unfully occupied orbital - potentially overlapping
Contain freely moving electrons
An atom is missing from its usual site
More soluble

4. Paramagnetism
Determined by synthetic conditions
Role of Lewis base in coordination chemistry
Magnetic moment = v(n*(n+2))
Contain freely moving electrons

5. Valence Band
Contain freely moving electrons
Determined by synthetic conditions
An atom is missing from its usual site
Use low amount of current to regulate large amount

6. p-type conductivity
Electron holes are formed by promotion of valence band electrons to the acceptor band
Recovered by electrolysis of molten salt
N=n; n+4; n+6
A

7. Atomic Number
Determined by synthetic conditions
Involved in biological methyl transfer
Z
(1.33x10^-13)* ³v(A)

8. Cobalamin
Role of Lewis base in coordination chemistry
Involved in biological methyl transfer
4/sqrt(3) * r
Forms ammonia from nitrogen

9. L.bcc
An atom is missing from its usual site
4/sqrt(3) * r
Fe(II)
Determined by synthetic conditions

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

11. p-n junction
Determined by thermodynamics (Increased entropy)
An atom has been displaced to another site
N=n; n+4; n+6
Allows AC to be converted to DC

12. Haber Process
Forms ammonia from nitrogen
A
Allows AC to be converted to DC
Recovered by electrolysis of molten salt

13. Frenkel defect
Conductivity increases with T
Use low amount of current to regulate large amount
An atom has been displaced to another site
Insulator which is doped with other elements

14. Extrinsic semiconductor
Insulator which is doped with other elements
N=n; n+4; n+6
Magnetic moment = v(n*(n+2))
Involved in biological methyl transfer

15. Alkali metals
N=n; n+4; n+6
Involved in biological methyl transfer
Recovered by electrolysis of molten salt
# of atoms of a ligand attached to a metal atom

16. Hapticity
Z
# of atoms of a ligand attached to a metal atom
Forms ammonia from nitrogen
Determined by synthetic conditions

17. Semiconductor
Involved in biological methyl transfer
More soluble
Conductivity increases with T
4/sqrt(3) * r

18. n-type conductivity
4/sqrt(3) * r
Excess electrons form a donor band close in energy to the conduction band
N=n; n+4; n+6
4/sqrt(2) * r

19. Nuclear Radius
Recovered by electrolysis of molten salt
Allows AC to be converted to DC
(1.33x10^-13)* ³v(A)
Fe(II)

20. Schottky defect
(1.33x10^-13)* ³v(A)
An atom is missing from its usual site
Z
Forms ammonia from nitrogen

21. Transistor
A
Use low amount of current to regulate large amount
(1.33x10^-13)* ³v(A)
An atom is missing from its usual site

22. Closo-; nido-; arachno- boranes
4/sqrt(2) * r
N=n; n+4; n+6
Insulator which is doped with other elements
Electron holes are formed by promotion of valence band electrons to the acceptor band

23. L.fcc
Unfully occupied orbital - potentially overlapping
4/sqrt(2) * r
More soluble
4/sqrt(3) * r

24. Mass Number
Fe(II)
Determined by thermodynamics (Increased entropy)
A
Magnetic moment = v(n*(n+2))

25. Ferrous
Fe(II)
Determined by thermodynamics (Increased entropy)
Z
Recovered by electrolysis of molten salt

26. Ligand / chelator
Use low amount of current to regulate large amount
More soluble
Z
Role of Lewis base in coordination chemistry