Consequences of lanthanides

Basicity of Oxides and hydroxides

As the atomic size increases, the basicity of oxides and hydroxides decreases. Due to lanthanide contraction, there is decrease in the size of lanthanide cations that increases the polarizing power of cations. That further increase the covalent character of the oxide and hydroxides.

Separation of Lanthanides –

All elements of the lanthanide series have same size without lanthanide contraction. So, it is very difficult to separate them. But due to lanthanide contraction, there is slight variation in the properties which is helpful for separating them.

Complex formation

The lanthanides have less  tendency to form complexes.The lanthanide ions have high charge and low charge density due to their large size. Hence, the stability and their tendency to form complex increases with increase in atomic number.

Related Posts

  • 58
    Lanthanides are used as catalyst to speed up the chemical reactions. It is widely used in peteroleum or refining industry for conversion of crude oil into consumer products –gasoline, kerosene, heating oil etc. They are strong reducing agents. They are used in streetlights, searchlights, optical lenses. Lanthanides oxide are used…
    Tags: lanthanides, oxides, lanthanide, f-block, elements, inorganic, chemistry
  • 53
    The f –block elements are those in which atoms or ions have valence electrons  in f-orbital. They are also called inner transition elements because the last or valence electron enters in (n-2)f orbital means in anti-penultimate energy level. They are also referred as rare earth elements. The general electronic configuration…
    Tags: elements, f-block, lanthanides, inorganic, chemistry
  • 52
    In lanthanides series, first few elements are quite reactive with calcium but with increase in atomic number, their reactivity is quite similar to aluminum. Lanthanides when reacted with carbon in inert atmosphere, then there is the formation of carbides.On gentle heating, it combine with hydrogen. Lanthanides form halides in the…
    Tags: lanthanides, f-block, elements, inorganic, chemistry
  • 44
    Atomic and ionic size – We all know that, the atomic size increase with increase in atomic number due to addition of new shell but in lanthanide series, as we move from left to right (cerium to lutetium), the atomic and ionic size decrease with increase in atomic number. The…
    Tags: lanthanide, chemistry, f-block, elements, inorganic
  • 42
    Actinides are strong reducing agent and very reactive in crushed from. They are radioactive due to less stable nuclei and also have no stable isotopes. They have variable oxidation state due to which its study is quite difficult – They readily react with HCl but when they react with nitric…
    Tags: formation, f-block, elements, inorganic, chemistry

Leave a Reply

Your email address will not be published. Required fields are marked *