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Can you explain the answer of this question below:
Which of the following is a common donor atom in ligands ?
  • A:
    arsenic
  • B:
    nitrogen
  • C:
    oxygen
  • D:
    both '2' and '3'
The answer is d.
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Can you explain the answer of this question below:Which of the followi...
Common Donor Atoms in Ligands


When a molecule or ion binds to a metal atom or ion, it is called a ligand. Ligands have atoms or groups of atoms that can donate a pair of electrons to the metal ion. These atoms are called donor atoms. The most common donor atoms in ligands are:



  • Nitrogen (N): Nitrogen is a common donor atom in ligands. It has a lone pair of electrons that can be donated to a metal ion. Examples of ligands that have nitrogen as a donor atom include ammonia (NH3), pyridine (C5H5N), and ethylenediamine (en).

  • Oxygen (O): Oxygen is another common donor atom in ligands. It has two lone pairs of electrons that can be donated to a metal ion. Examples of ligands that have oxygen as a donor atom include water (H2O), carboxylates (RCOO-), and nitrate (NO3-).

  • Arsenic (As): Arsenic is also a donor atom in some ligands. It has a lone pair of electrons that can be donated to a metal ion. Examples of ligands that have arsenic as a donor atom include arsenate (AsO43-).



Therefore, the correct answer to the question is D, both nitrogen and oxygen are common donor atoms in ligands.
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Can you explain the answer of this question below:Which of the followi...
D is the correct answer because O and N has lone pair
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