Question

9. Which block elements are separated in
modern periodic table? []
A d
B) f
C)
S
D)​

Answer 1

Answer:

Gadolinium; Lutetium; Cerium

Explanation:

The lanthanides and actinides form a group that appears almost disconnected from the rest of the periodic table. This is the f block of elements, known as the inner transition series. This is due to the proper numerical position between Groups 2 and 3 of the transition metals.

Answer 2

$option \: (b) \: is \: correct \: one ✔✔ \\ \\ = \: f - block$

REASON:-

The reason why Lanthanides and Actinides are located at the bottom of the periodical table is because of their properties and in the block in which electrons fill up. ... The reason why inner-transition metals are located at the bottom of the periodic table, separated from the rest is because they all fill the f-block

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