Chemistry-(general)
NEET Chemistry (general) Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 11
Assertion (A): The sixth period in the periodic table contains 32 elements. | Reason (R): The filling of 4f orbitals begins with cerium and ends at lutetium, forming the lanthanoid series.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
The sixth period contains 32 elements due to the addition of the lanthanoid series, which involves the filling of 4f orbitals from cerium to lutetium.
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