CUET · CHEMISTRY · PYQ PAPER 2025
Decide which of the following atomic numbers are the atomic numbers of the inner transition elements
(A) 59
(B) 95
(C) 102
(D) 74
Choose the correct answer from the options given below:
- A (A), (B) and (D) only
- B (A), (B) and (C) only
- C (B), (C) and (D) only
- D (A), (C) and (D) only
Answer & Solution
Correct Answer
(B) (A), (B) and (C) only
Step-by-step Solution
Detailed explanation
Inner transition elements have atomic numbers Z = 58-71 (Lanthanides) or Z = 90-103 (Actinides). (A) 59 is a Lanthanide. (B) 95 is an Actinide. (C) 102 is an Actinide. (D) 74 is a d-block transition metal. Correct answer: (A), (B) and (C) only.
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