Question

Elements upto atomic no. 112 have been discovered till now. What will be the electronic configuration of the element possessing atomic no. 108.

• A. $\left[Rn\right]5f^{14}6d^{6}7s^2$
• B. $6f^{14}7d^{8}7s^2$
• C. $\left[Rn\right]5f^{14}6d^{6}7s^0$
• D. $\left[Xe\right]4f^{14}5d^{8}6s^2$

Answer 1

The correct option is A $\left[Rn\right]5f^{14}6d^{6}7s^2$

Elements upto atomic no. 112 have been discovered till now. The electronic configuration of the element possessing atomic no. 108 will be $\left[Rn\right]5f^{14}6d^{6}7s^2$. It is an f-block element. The atomic number of radon is 86. $108-86=22$ electrons are filled in 5f, 6d and 7s subshell.