Question

Write the electronic configurations of the elements with the atomic numbers $61,91,101$ and $109.$

Answer 1

Electronic configuration

Electronic configuration of given atomic numbers shown below in table:

$\begin{array}{ccc}\text{Atomic number}& \text{Element}& \text{Electronic configuration}\\ 61& \text{Promethium}& \left[Xe\right]4f^{5}5d^{0}6s^2\\ 91& \text{Protactinum}& \left[Rn\right]5f^{2}6d^{1}7s^2\\ 101& \text{Mendelevium}& \left[Rn\right]5f^{13}6d^{0}7s^2\\ 109& \text{Meitnerium}& \left[Rn\right]5f^{14}6d^{7}7s^2\end{array}$