For the following questions consider the complex ion Co(en)2NH3Cl^2+. a. Identif

Question

For the following questions consider the complex ion Co(en)2NH3Cl^2+.

a. Identify the three ligands and their charges.

b. What is the oxidation number of colbolt?

c. What is the name of this ion?

d. Write the formula for the salt if you added sulfate ions.

e. What is the coordination number of colbalt in the complex ion?

f. What is the geometry of the complex ion?

g. How many geometric isomers are there?

h. How many d-electrons does cobalt have?

i. If cobalt were a low spin complex what would its electron distribution look like?

Explanation / Answer

a) Cl, NH3, en (ethylenediammine)

b) +3

c) aminochlorobisethylenedimminecobalt(III) ion

d) [Co(en)2NH3Cl] SO4

e) 6

f) octahedral

g) 2 ( cis and trans)

h) 6

i) T2g6 eg0

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