Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which of the following statements regarding the electronic configurations of lanthanides is correct?
A
All lanthanides have a 4f subshell that is progressively filled with electrons.
B
The electronic configuration of lanthanides includes a filled 4f subshell before the 5d subshell.
C
Lanthanum has a completely filled 4f subshell in its ground state.
D
The oxidation states of lanthanides primarily arise from the loss of 6s electrons.
Correct Answer
Option A
Detailed Explanation
Lanthanides are characterized by the progressive filling of the 4f subshell, as indicated by their electronic configurations. For example, Cerium starts with one electron in the 4f subshell, and it continues to fill through the series.
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