1) What is the formula for potassium diamminetetrachlorovanadate(III)? a) [KV(NH

Question

1)What is the formula for potassium diamminetetrachlorovanadate(III)?

a) [KV(NH3)2Cl4]

b) K2[V(NH3)2Cl4]

c) K[V(NH3)2Cl4]

d)[KV(NH3)2]Cl4

e)K[V(NH3)2]Cl4

2. The effective atomic number (EAN) rule states that organometallic coordination compounds are likely to be stable if ____ ?

a) the oxidation state of the metal is zero.

b) the sum of the metal valence electrons plus the electrons donated by the ligand equals 18.

c) the ligand field splitting is small.

d)the metal has an even atomic number.

e) the metal has an odd atomic number.

3) What are the possible geometries of a metal complex with a coordination number of 4?

1. square planar

2. tetrahedral

3. octahedral

a)1 only

b) 2 only

c) 3 only

d) 1 and 2

e) 1, 2, and 3

4) Determine the number of unpaired electrons in the tetrahedral complex ion [Co(NH3)4]2+,

a)0

b)1

c)2

d)3

3) 4

5) Iron, _____, and sulfur form the reactive portion of nitrogenase, a biological catalyst used by nitrogen-fixing organisms.

a) Fe

b)Co

c)Zn

d)Cd

3) Mo

6) Which element has the highest density?

a) Zn

b)Y

c) Os

d) Fe

e) Ag

Explanation / Answer

1. C

2. B

3. D

4. D

5. E

6. C

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