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.

In V2O5, vanadium has an oxidation state of +5.

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.

Fe²⁺ has the highest magnetic moment due to its higher number of unpaired electrons compared to Co²⁺, Ni²⁺, and Cu²⁺.

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.