Question

4f elements are called as

• A. Transition elements
• B. Alkaline earth metals
• C. Actinoids
• D. Lanthanoids

Answer 1

The Correct Option is D

To solve the problem, we need to understand what the 4f elements are called.

1. The 4f Elements:
The 4f elements are elements whose electrons fill the 4f orbital. These elements belong to the lanthanide series and are also known as lanthanoids.

2. Conclusion:
The 4f elements are called Lanthanoids.

Final Answer:
The 4f elements are called $ {\text{Lanthanoids}} $.