Question

1)What is the formula for potassiumdiamminetetrachlorovanadate(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 thatorganometallic 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 electronsdonated 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 acoordination 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 tetrahedralcomplex ion [Co(NH3)4]2+,

a)0

b)1

c)2

d)3

e) 4

5) Iron, _____, and sulfur form the reactive portion ofnitrogenase, a biological catalyst used by nitrogen-fixingorganisms.

a) Fe

b)Co

c)Zn

d)Cd

e) Mo

6) Which element has the highest density?

a) Zn

b)Y

c) Os

d) Fe

e) Ag