What is the coordination number of hydrogen in the complex ion [H2O]2+?

₹0.0

Question: What is the coordination number of hydrogen in the complex ion [H2O]2+?

Options:

Correct Answer: 2

Solution:

In the complex ion [H2O]2+, the coordination number of hydrogen is 2.

What is the coordination number of hydrogen in the complex ion [H2O]2+?

What is the coordination number of hydrogen in the complex ion [H2O]2+?

Step 1: Understand what a coordination number is. It refers to the number of atoms or ions that are bonded to a central atom in a complex.
Step 2: Identify the central atom in the complex ion [H2O]2+. In this case, the central atom is oxygen (O) in the water molecule (H2O).
Step 3: Look at the hydrogen atoms in the water molecule. Each water molecule (H2O) has 2 hydrogen atoms.
Step 4: Since there are 2 water molecules in the complex ion [H2O]2+, we have a total of 2 (from the first H2O) + 2 (from the second H2O) = 4 hydrogen atoms.
Step 5: However, the coordination number refers to how many hydrogen atoms are directly bonded to the central atom (oxygen). In this case, each water molecule contributes 2 hydrogen atoms, but they are not counted separately for coordination. Therefore, the coordination number of hydrogen in the complex is 2.

Coordination Number – The coordination number refers to the number of atoms, ions, or molecules that a central atom or ion can bond with in a complex.
Complex Ions – Complex ions consist of a central metal atom or ion bonded to surrounding ligands, which can be neutral molecules or anions.
Hydrogen Bonding – In the context of coordination complexes, hydrogen can act as a ligand, but its role and bonding capacity can be misunderstood.