Question

1) Why is Cr? more stable than Cr2+?
b) Why is Cu2+ more stable than Cut ?
2) Why do transition metals form complex compounds?​

Answer 1

Answer:

2) Why do transition metals form complex compounds?

Explanation:

Hope it will help u

According to this model, transition-metal ions form coordination complexes because they have empty valence-shell orbitals that can accept pairs of electrons from a Lewis base. Ligands must therefore be Lewis bases: They must contain at least one pair of nonbonding electrons that can be donated to a metal ion.

Answer 2

Answer:

Cu2+ is more stable than Cu+.Stability depends on the hydration energy (enthalpy) of the ions when they bond to the water molecules. The Cu2+ ion has a greater charge density than Cu+ ion and thus forms much stronger bonds releasing more energy. The extra energy needed for the second ionization of the copper is more than compensated for by the hydration, so much so that the Cu+ ion loses an electron to become Cu2+ which can then release this hydration energy.

In aqueous solution Cu+ disproportionate to Cu2+ and Cu

2Cu+------>Cu2+ +Cu.