Multiple choice

What is the donor atom in the coordination compound [Co(NH3)6]Cl3?

  1. Hydrogen

  2. Nitrogen

  3. Chlorine

  4. Cobalt
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In coordination compounds, donor atoms are ligand atoms that directly coordinate to the central metal ion. In [Co(NH3)6]Cl3, ammonia (NH3) ligands coordinate through nitrogen atoms. Chlorine is outside the coordination sphere as a counterion.

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