Gen. Chem. - Chapter 15
Choose the correct answer for each question.
 

1Calculate the charge on the central metal in the complex ion Cr(H2O)3Cl2Br -
-1
0
+1
+2

2The formula for a complex ion between Ru2+ , 2 NH3 molecules, 2 Cl- ions, and 2 CN- ions is...
Ru(NH3)(Cl2)(CN)2
Ru(NH3)(Cl2)(CN)22+
Ru(NH3)(Cl2)(CN)22-
Ru(NH3)(Cl2)(CN)24-

3The coordination no. for the complex ion Cr(en)2Cl2 + is...
2
3
4
6

4Which of the following ligands would most likely form the strongest bond with a Co2+ ion?
NH3
H2O
Br-
C2O42-

5The shape of a Ag(H2O)(NH3) + complex is...
tetrahedral
square planar
linear
octahedral

6The two different isomers for a CoX3Y3 complex are designated...
cis and trans
mer and fac
I and II
there is only one isomer of CoX3Y3

7Which of the following would show cis-trans isomerism?
Ag(CN)2-
Ag(NH3)(H2O)+ (tetrahedral)
Pt(NH3)3(H2O) 2+ (square planar)
Co(en)2Cl2 +

8The abbreviated electronic configuration for the V3+ ion is...
[Ar] 3d2
[Ar] 3d3
[Ar] 4s2
[Ar] 4s23d6

9The number of unpaired electrons in a "hi-spin" Mn2+ complex is...
1
2
4
5

10The bright colors of transition metal complexes are due to...
electronic transitions between 2 sets of d-orbitals.
the identity of the central metal.
the coordination number.
the presence of a chelating agent.