That is right
Oxygen's configuration is 2,6
Oxygen^2- has a configuration of 2, 8
So O^2- (an Oxygen ion) has 10 electrons
Similarly Fluorine's configuration is 2,7
but F^-1 has a configuration of 2,8 (i.e. 10 electrons)
Neon (the element) has an electronic configuration of 2,8 (i.e. 10...