Question

Explain the meaning of inner transition series?

Answer 1

Hi,
These INNER TRANSITION ELEMENTS are the elements in periodic table which are located in the bottom of modern periodic table
These are also called as f-block elements
BUT,why are these called Inner transition elements??
They have relation with (d-block elements) or transition elements

These elements are in continue from transition elements(in terms of atomic number)
these Start from Atomic number-58
And elements from atomic number 58 to 71 ARE LANTHANIDES
And elements are 90 to 103 are called ACTINIDES
These are Radioactive elements all of them

IMAGE SOURCE-https://en.wikipedia.org/wiki/Periodic_table