Test your basic knowledge |

GRE Chemistry Inorganic

Instructions:

Answer 26 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. n-type conductivity
Excess electrons form a donor band close in energy to the conduction band
Recovered by electrolysis of molten salt
Involved in biological methyl transfer
Contain freely moving electrons

2. Alkali metals
# of atoms of a ligand attached to a metal atom
Insulator which is doped with other elements
Role of Lewis base in coordination chemistry
Recovered by electrolysis of molten salt

3. Nuclear Radius
(1.33x10^-13)* ³v(A)
4/sqrt(2) * r
Electron holes are formed by promotion of valence band electrons to the acceptor band
Insulator which is doped with other elements

4. p-n junction
Allows AC to be converted to DC
(1.33x10^-13)* ³v(A)
Determined by thermodynamics (Increased entropy)
Electron holes are formed by promotion of valence band electrons to the acceptor band

5. L.bcc
Allows AC to be converted to DC
Determined by synthetic conditions
4/sqrt(3) * r
N=n; n+4; n+6

6. Haber Process
Z
Insulator which is doped with other elements
Role of Lewis base in coordination chemistry
Forms ammonia from nitrogen

7. Extrinsic semiconductor
Z
4/sqrt(3) * r
Unfully occupied orbital - potentially overlapping
Insulator which is doped with other elements

8. Ferrous
Fe(II)
An atom has been displaced to another site
A
(1.33x10^-13)* ³v(A)

9. Intrinsic defect
4/sqrt(2) * r
Unfully occupied orbital - potentially overlapping
Determined by thermodynamics (Increased entropy)
Z

10. Semiconductor
Forms ammonia from nitrogen
Conductivity increases with T
A
An atom is missing from its usual site

11. Extrinsic defect
A
Z
Use low amount of current to regulate large amount
Determined by synthetic conditions

12. Transistor
Involved in biological methyl transfer
Role of Lewis base in coordination chemistry
An atom has been displaced to another site
Use low amount of current to regulate large amount

13. Cobalamin
Involved in biological methyl transfer
Allows AC to be converted to DC
Use low amount of current to regulate large amount
# of atoms of a ligand attached to a metal atom

14. p-type conductivity
N=n; n+4; n+6
Electron holes are formed by promotion of valence band electrons to the acceptor band
Allows AC to be converted to DC
A

15. Atomic Number
Role of Lewis base in coordination chemistry
Z
Fe(II)
Determined by thermodynamics (Increased entropy)

16. Ligand / chelator
Role of Lewis base in coordination chemistry
An atom has been displaced to another site
Conductivity increases with T
An atom is missing from its usual site

17. Larger difference in atomic radii
A
Involved in biological methyl transfer
An atom is missing from its usual site
More soluble

18. Frenkel defect
Use low amount of current to regulate large amount
Fe(II)
# of atoms of a ligand attached to a metal atom
An atom has been displaced to another site

19. Valence Band
Contain freely moving electrons
4/sqrt(2) * r
Role of Lewis base in coordination chemistry
N=n; n+4; n+6

20. Paramagnetism
Magnetic moment = v(n*(n+2))
Unfully occupied orbital - potentially overlapping
N=n; n+4; n+6
Role of Lewis base in coordination chemistry

21. Hapticity
Contain freely moving electrons
Unfully occupied orbital - potentially overlapping
Recovered by electrolysis of molten salt
# of atoms of a ligand attached to a metal atom

22. L.fcc
4/sqrt(3) * r
Forms ammonia from nitrogen
(1.33x10^-13)* ³v(A)
4/sqrt(2) * r

23. Conduction band
An atom has been displaced to another site
Unfully occupied orbital - potentially overlapping
Fe(II)
Magnetic moment = v(n*(n+2))

24. Closo-; nido-; arachno- boranes
Forms ammonia from nitrogen
N=n; n+4; n+6
Excess electrons form a donor band close in energy to the conduction band
Unfully occupied orbital - potentially overlapping

25. Mass Number
A
Unfully occupied orbital - potentially overlapping
Insulator which is doped with other elements
4/sqrt(2) * r

26. Schottky defect
Magnetic moment = v(n*(n+2))
Excess electrons form a donor band close in energy to the conduction band
Fe(II)
An atom is missing from its usual site