difference between transition and iiner transition elements
Answers
Explanation:
INNER TRANSITION ELEMENTS
1. in the inner transition elements the third last shell is filled with electrons.
2. The inner transition elements form coloured ions.
3. The inner transition elements show variable valencies.
4. Actinides are radioactive by nature.
5. The inner transition elements beyond atomic number 92 up to 103 are synthetic as well as radioactive. They are not found in nature in the earth’s crust.
TRANSITION ELEMENTS
1. These elements form coloured compounds and ions. This colour is explained by the d-d transition of electrons.
2. There is a relatively low gap in energy between the possible oxidation states of these elements. The transition elements, therefore, exhibit many oxidation states.
3. Many paramagnetic compounds are formed by these elements, because of the unpaired electrons in the d orbital.
4. A large variety of ligands can bind themselves to these elements. Due to this, a wide variety of stable complexes are formed by transition elements.
5. These elements have a large ratio of charge to the radius.
6. Transition metals tend to be hard and they have relatively high densities when compared to other elements.
7. The boiling points and the melting points of these elements are high, due to the participation of the delocalized d electrons in metallic bonding.
8. This metallic bonding of the delocalized d electrons also causes the transition elements to be good conductors of electricity.