Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

[FeF6]4- is which type of complex?

Options:

Inner orbital complex

Outer orbital complex

Double salt

None of these

Correct Answer:

Outer orbital complex

Explanation:

In [FeF6]4- ion

x + 6(-1) = -4

x - 6 = -4

x = -4 + 6 = 2

Fe2+: [Ar]3d6

As F- is a weaker field ligand. So, it will not involve 3d orbitals by pairing the electrons, but it will use 4d-orbitals of Fe2+ ion making it a outer orbital complex.