Question

Identify inner transition element from following.

• A. Hf
• B. Mo
• C. No
• D. Zr

Hint:

Inner transition elements are the lanthanoids and actinoids, filling the 4f and 5f subshells.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
Inner transition elements are the f-block elements: lanthanoids (Ce to Lu) and actinoids (Th to Lr).

Step 2: Check
Hf, Mo and Zr are d-block transition elements.\nNo (nobelium, Z = 102) is an actinoid.

Final Answer:
No (nobelium) is the inner transition element. \[ \boxed{\text{(C) }\text{No}} \]