Helium 1-18

(a)  

Lithium 2-1

(a)  

Berylium 2-2

(a)  

Boron 2-13

(a)  

Carbon 2-14

(a)  

Nitrogen 2-15

(a)  

Oxygen 2-16

(a)  

Fluorine 2-17

(a)  

Neon 2-18

(a)  

Sodium 3-1

(a)  

Magnesium 3-2

(a)  

Aluminium 3-13

(a)  

Silcon 3-14

(a)  

Phosphorus 3-15

(a)  

Sulfur 3-16

(a)  

Chlorine 3-17

(a)  

Argon 3-18

(a)  

Potassium 4-1

(a)  

Calcium 4-2

(a)  

Magnanese

(a)  

Iron

(a)  

Copper

(a)  

Zinc

(a)  

Silver

(a)  

Tin

(a)  

Tungsten

(a)  

Gold

(a)  

Mercury

(a)  

Lead

(a)  

Radon

(a)  

Radium

(a)  

Uranium

(a)