Which of the following metal ions is most likely to exist as a stable eight-coordinate complex with fluoride? cu2+ cu+ fe3+ ag3+ u4+

The metal ion that can most adequately exist in the form of 8-coordinate complex would be:

d). U⁴⁺  

'Coordination Complex' is characterized as either an ion or a compound that consists of the main metallic atom that is linked through interrelated bonds employing a fixed number of nearby encircling atoms.In the given question, the metal ion U⁴⁺ would most adequately retain in the form of  8 coordinate complexes because it allows metals to sustain in a greater rate of oxidation having a greater ratio of M:F. Since hard bases are defined by stronger acids, U⁴⁺ would be most appropriate as it is a hard acid while F⁻ is a strong base which makes it reliable.

Thus, option d is the correct answer.

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