Part A What is the coordination number for each of the following complexes? A) [
ID: 971814 • Letter: P
Question
Part A
What is the coordination number for each of the following complexes?
A) [Fe(gly)2(H2O)2]+
B) [Pb(EDTA)]2
C) [Pt(NH3)4]2+
D) Na[Au(CN)2]
Enter the coordination numbers, in the order that the complexes are listed, as four integers separated by commas (e.g., 1,2,3,4).
Part B
What is the charge on each of the following complex ions?
A) hexaaquachromium(II), [Cr(H2O)6]?
B) tris(carbonato)ferrate(III), [Fe(CO3)3]?
C) diaquatetrabromovanadate(III), [V(H2O)2Br4]?
Express the charges numerically, in the order that the complexes are listed, separated by commas. For a nonzero charge, be sure to include the sign (e.g., +1,-2,+3).
Part C
What is the oxidation number of the central metal ion in each of the following complexes?
A) [NiCl3F]2
B) [Cr(H2O)2(NH3)4]3+
C) Na[Ag(CN)2]
Express the oxidation numbers numerically, in the order that the complexes are listed, separated by commas. For a nonzero oxidation number, be sure to include the sign (e.g., +1,-2,+3).
Explanation / Answer
Part A
A) [Fe(gly)2(H2O)2]+ --------------->coordination number 6
B) [Pb(EDTA)]2 --------------->coordination number 6
C) [Pt(NH3)4]2+ ----------------->coordination number 4
D) Na[Au(CN)2] ---------------->coordination number 2
answe (6,6,4,2)
Part B
A) hexaaquachromium(II), [Cr(H2O)6]? --------------> +3
B) tris(carbonato)ferrate(III), [Fe(CO3)3] --------------> -3
C) diaquatetrabromovanadate(III), [V(H2O)2Br4]? --------------> -1
answer (+3 , -3 , -1)
Part C
A) [NiCl3F]2 -------------------> +2
B) [Cr(H2O)2(NH3)4]3+ --------------> +3
C) Na[Ag(CN)2] ----------------> +1
answer : (+2 , +3 , +1)
explanation"
for part A)
the number of lignads around central atom or ion called coordination number . suppose C) [Pt(NH3)4]2+ there are 4 NH3 ligands are present , so its coordination number is 4
part B)
for example charge calculations :
[Fe(CO3)3] = x + 3 x -2
= x -6
Fe maxium oxidation state is +3 so if you put -3 on square bracket we get +3
part C)
A) [NiCl3F]2
let Ni oxidation state = m
m + 3 x -1 + 1 x -1 = -2
x -4 = -2
x = +2