Potassium permanganate (KMnO4) is known for its deep purple color.

[Cu(NH3)4]2+ is known to exhibit a blue color due to d-d transitions.

Potassium dichromate (K2Cr2O7) gives a yellow solution.

In CrO3, chromium (Cr) has an oxidation state of +6.

In FeCl3, iron (Fe) has an oxidation state of +3.

In FeCl3, iron (Fe) has a primary oxidation state of +3.

Titanium dioxide (TiO2) is primarily used as a white pigment in paints and coatings.

All the listed compounds represent common oxidation states of vanadium: +5 in V2O5, +2 in VO, and +3 in V2O3.

Ag(NH3)2+ is a complex ion formed by silver and ammonia.

Fe(CN)6^4- is a typical example of a transition metal complex.

Copper (Cu) is known for its ability to form complex ions due to its d-orbitals.

Neodymium is used in making strong permanent magnets, known as neodymium magnets.

Cations of transition metals are primarily responsible for the color of their complexes.

Gold commonly exhibits oxidation states of +1 and +3, with +3 being the most stable.

Iron commonly exhibits oxidation states of +2 and +3, with +3 being more prevalent in compounds.

Manganese commonly exhibits an oxidation state of +2.

All actinides are radioactive, with many being synthetic and unstable.

D-block elements typically have variable oxidation states and lower ionization energies compared to p-block elements.