NEET2021Chemistry-Periodic Table
NEET 2021 Chemistry Lanthanoids and Actinoids MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The incorrect statement among the following is:
A
Actinoid contraction is greater for element to element than Lanthanoid contraction.
B
Most of the trivalent Lanthanoid ions are colorless in the solid state.
C
Lanthanoids are good conductors of heat and electricity.
D
Actinoids are highly reactive metals, especially when finely divided.
Correct Answer
Option B
Detailed Explanation
Lanthanoids are generally poor conductors of heat and electricity due to their f-electron configuration. Option C is incorrect.
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