If overline(X) ion has 10 neutrons and 9 protons , then the electronic configuration of the atom of the element x is

If overline(X) ion has 10 neutrons and 9 protons , then the electronic

1.	If overline(X) ion has 10 neutrons and 9 protons , then the electronic configuration of the atom of the element x is
Answer» 1 ,8 ,1 2 , 1 2 , 8 2 ,8,8 Solution :`X^(-)` possess 9 protons (Z), 10 NEUTRONS and 10 electrons `Xoverset(+l e^(-1))toX^(-1)` (9 electrons)""(10 electrons) Therefore , the electronic CONFIGURATION of an atom is 2 , 7