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. Hapticity
# of atoms of a ligand attached to a metal atom
Magnetic moment = v(n*(n+2))
Role of Lewis base in coordination chemistry
Involved in biological methyl transfer

2. n-type conductivity
Excess electrons form a donor band close in energy to the conduction band
Electron holes are formed by promotion of valence band electrons to the acceptor band
Z
An atom is missing from its usual site

3. Cobalamin
Electron holes are formed by promotion of valence band electrons to the acceptor band
N=n; n+4; n+6
Involved in biological methyl transfer
Z

4. Larger difference in atomic radii
A
Magnetic moment = v(n*(n+2))
More soluble
Role of Lewis base in coordination chemistry

5. Ferrous
Excess electrons form a donor band close in energy to the conduction band
Fe(II)
Electron holes are formed by promotion of valence band electrons to the acceptor band
More soluble

6. p-type conductivity
Electron holes are formed by promotion of valence band electrons to the acceptor band
Insulator which is doped with other elements
Z
Magnetic moment = v(n*(n+2))

7. p-n junction
Magnetic moment = v(n*(n+2))
4/sqrt(3) * r
Forms ammonia from nitrogen
Allows AC to be converted to DC

8. Paramagnetism
Insulator which is doped with other elements
Forms ammonia from nitrogen
Magnetic moment = v(n*(n+2))
Determined by thermodynamics (Increased entropy)

9. Closo-; nido-; arachno- boranes
4/sqrt(2) * r
Unfully occupied orbital - potentially overlapping
N=n; n+4; n+6
Fe(II)

10. Nuclear Radius
4/sqrt(2) * r
N=n; n+4; n+6
Conductivity increases with T
(1.33x10^-13)* ³v(A)

11. Alkali metals
Recovered by electrolysis of molten salt
Determined by thermodynamics (Increased entropy)
4/sqrt(3) * r
Excess electrons form a donor band close in energy to the conduction band

12. Intrinsic defect
Electron holes are formed by promotion of valence band electrons to the acceptor band
Determined by thermodynamics (Increased entropy)
4/sqrt(3) * r
Z

13. L.fcc
Insulator which is doped with other elements
4/sqrt(2) * r
N=n; n+4; n+6
An atom has been displaced to another site

14. Extrinsic defect
Involved in biological methyl transfer
Determined by synthetic conditions
N=n; n+4; n+6
Fe(II)

15. Schottky defect
An atom is missing from its usual site
Forms ammonia from nitrogen
Magnetic moment = v(n*(n+2))
Fe(II)

16. L.bcc
4/sqrt(3) * r
(1.33x10^-13)* ³v(A)
Conductivity increases with T
Fe(II)

17. Haber Process
Forms ammonia from nitrogen
# of atoms of a ligand attached to a metal atom
(1.33x10^-13)* ³v(A)
4/sqrt(2) * r

18. Extrinsic semiconductor
# of atoms of a ligand attached to a metal atom
Magnetic moment = v(n*(n+2))
Insulator which is doped with other elements
(1.33x10^-13)* ³v(A)

19. Atomic Number
Contain freely moving electrons
An atom is missing from its usual site
Z
Magnetic moment = v(n*(n+2))

20. Transistor
Use low amount of current to regulate large amount
Magnetic moment = v(n*(n+2))
Excess electrons form a donor band close in energy to the conduction band
N=n; n+4; n+6

21. Valence Band
Contain freely moving electrons
Involved in biological methyl transfer
Determined by thermodynamics (Increased entropy)
N=n; n+4; n+6

22. Semiconductor
Forms ammonia from nitrogen
Use low amount of current to regulate large amount
Recovered by electrolysis of molten salt
Conductivity increases with T

23. Conduction band
Role of Lewis base in coordination chemistry
Allows AC to be converted to DC
Magnetic moment = v(n*(n+2))
Unfully occupied orbital - potentially overlapping

24. Frenkel defect
Z
An atom has been displaced to another site
# of atoms of a ligand attached to a metal atom
Allows AC to be converted to DC

25. Ligand / chelator
4/sqrt(3) * r
Role of Lewis base in coordination chemistry
Insulator which is doped with other elements
4/sqrt(2) * r

26. Mass Number
An atom is missing from its usual site
Allows AC to be converted to DC
A
Contain freely moving electrons