What is the coordination number of hydrogen in the complex [Ni(H2)6]?

What is the coordination number of hydrogen in the complex [Ni(H2)6]?

Step 1: Identify the complex given in the question, which is [Ni(H2)6].
Step 2: Understand that 'H2' refers to a diatomic hydrogen molecule, which acts as a ligand.
Step 3: Count the number of hydrogen ligands in the complex. Here, there are 6 'H2' molecules.
Step 4: Recognize that each 'H2' molecule counts as one ligand, so 6 'H2' molecules mean there are 6 ligands in total.
Step 5: Conclude that the coordination number is the total number of ligands attached to the central metal (nickel in this case).
Step 6: Therefore, the coordination number of hydrogen in the complex [Ni(H2)6] is 6.

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