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24. Transition Metals and Coordination Compounds - Part 3 of 3

24. Transition Metals and Coordination Compounds / Magnetic Properties of Complex Ions: Octahedral Complexes / Problem 8

Consider the complex with the formula K[Co(NH₃)₆](CO₃)₂.
i. Provide the name of the compound.
ii. Calculate the oxidation number of Co.
iii. Sketch its crystal field energy-level diagram.
iv. Classify the complex as either high-spin or low-spin.
v. Identify the number of unpaired electrons, if any

A

i. +3

ii. potassium hexaamminecobalt(III) carbonate

iii.

.

iv. low-spin complex

v. 0 unpaired electrons

B

i. +2

ii. potassium hexaamminecobaltate(II) dicarbonate

iii.

iv. high-spin complex

v. 3 unpaired electrons

C

i. +3

ii. potassium hexaamminecobalt(III) carbonate

iii.

iv. high-spin complex

v. 3 unpaired electrons

D

i. +2

ii. potassium hexaamminecobaltate(II) dicarbonate

iii.

.

iv. low-spin complex

v. 0 unpaired electrons

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