Which of the following coordination compounds is likely to be colored?

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Question: Which of the following coordination compounds is likely to be colored?

Options:

Correct Answer: [Cu(NH3)4]2+

Solution:

The complex [Cu(NH3)4]2+ contains a transition metal with d-electrons that can be excited, resulting in color.

Which of the following coordination compounds is likely to be colored?

Which of the following coordination compounds is likely to be colored?

Step 1: Identify the coordination compounds given in the question.
Step 2: Look for the presence of transition metals in the compounds.
Step 3: Check if the transition metal has d-electrons (these are electrons in the d-orbitals).
Step 4: Understand that d-electrons can be excited to higher energy levels when light hits the compound.
Step 5: Realize that when d-electrons are excited, the compound can absorb certain wavelengths of light, leading to color.
Step 6: Conclude that the complex [Cu(NH3)4]2+ is likely to be colored because it contains copper (Cu), a transition metal with d-electrons.

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