Chemistry · Coordination Compounds
A coordination complex with the empirical formula CoCl3·4NH3 reacts with excess AgNO3 solution to precipitate exactly one mole of AgCl per mole of the complex. What is the correct structural formula and coordination number (CN) of the central metal atom?
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- 1[Co(NH3)4]Cl3 and CN = 4
- 2[Co(NH3)4Cl2]Cl and CN = 6✓
- 3[Co(NH3)3Cl3]·NH3 and CN = 6
- 4[Co(NH3)4Cl]Cl2 and CN = 5
Correct answer
[Co(NH3)4Cl2]Cl and CN = 6
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