Identify the energy level of the valence electron in this element.

Ar (Argon)
I (Iodine)
Br (Bromine)
N (Nitrogen)
Ra (Radium)
H (Hydrogen)

I've done my work, but I'm not sure if they're right.
So, it goes like NRG LVL 1or NRG LVL 3,etc. Please help me.

Argon, n = 3
Iodine, n = 5
Bromine, n = 4
Nitrogen, n = 2
Radon, n = 6
Hydrogen, n = 1

n is the energy level.