Question

The observed electronic configuration of Protactinium (Atomic number $=91$ ) is_______. $[Rn]5f^{x}6d^{y}7s^z$
The value of $(x+y+z)$ is _______.

Answer 1

Answer: 5

Observed electronic configuration of
Protactinium (Atomic number = 91) is
$\left[Rn\right]5f^{2}6d^{1}7s^2$ .
$\therefore x=2,y=1,z=2$
$\therefore x+y+z=5$