Chemistry-(general)
NEET Chemistry (general) Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 12
Assertion (A): Lanthanum shows a stable +3 oxidation state. Reason (R): Lanthanum has an electronic configuration of [Xe] 5d1 6s2.
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 B
Detailed Explanation
Lanthanum shows a stable +3 oxidation state due to the loss of three electrons, but this is not solely explained by its electronic configuration of [Xe] 5d1 6s2.
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