Question

Where are lanthanide series and actinde series in modern periodic table ?​

Answer 1

they lies in f - block .

down the modern periodic table

Answer 2

The lanthanide and actinide series make up the inner transition metals. The lanthanide series includes elements 58 to 71, which fill their 4f sublevel progressively. The actinides are elements 89 to 103 and fill their 5f sublevel progressively.