Orbital shell

K

L

M

N

O

P

Q

Maximum

2

8

18

32

32

18

8

number of

electron (N)

reported

Quantum

N = 2n²

2

8

18

32

32

18

8

physics

n

1

2

3

4

4

3

2

The “ultron”-

N = n + or −2

2

8

18

32

32

18

8

“logotron”

n

0

10

20

30

30

20

10

theory