Question

What is the number of elements in the third group of the periodic table?

• A. 18
• B. 12
• C. 10
• D. 8

Hint:

Group 3 of the periodic table includes transition metals and lanthanides.

Answer 1

The Correct Option is C

The third group of the periodic table consists of elements including scandium, yttrium, and the lanthanides, totaling 10 elements. Thus, the correct answer is \( \mathbf{(C) 10} \).