Question

The lanthanide element that has the electronic configuration $\left[Xe\right]4f^{7}5d^{1}6s^2$ is:

• A. Lutetium
• B. Terbium
• C. Ytterbium
• D. Gadolinium

Answer 1

The correct option is D Gadolinium

$\left[Xe\right]4f^{7}5d^{1}6s^2$ is the electronic configuration of gadolinium.

Gadolinium is a chemical element with the symbol Gd and atomic number 64.

Hence, option D is correct.