Question

what are inner transition elements ? give four properties of lanthanides
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Answer 1

Explanation:

Main Characteristics of Inner Transition Elements

In the inner transition elements the third last shell is filled with electrons.

The inner transition elements form coloured ions.

The inner transition elements show variable valencies.

Actinides are radioactive by nature.

Answer 2

The f-block elements are called inner transition elements.

• The elements in which the last electron enters the f-subshell are called the f-block elements and the f-block elements are called the inner transition elements.
• Properties of Lanthanides are:

     ⇒ The lanthanoids have high melting and boiling points.

     ⇒ The lanthanoids have a common +3 oxidation state.

    ⇒ The lanthanoids are paramagnetic in nature.

    ⇒ The lanthanoids are colored as they have unpaired electrons.