Atomic Number
Element
Symbol
Element
Atomic Number
100

2

Helium

100

B

Boron

100

Silicon

Si

100

Na

Sodium

100

10

Neon

200

13

Aluminium 

200

Cr

Chromium

200

Titanium 

Ti

200

Ar

Argon 

200

25

Magnesium

300

20

Calcium

300

Ni

Nickel

300

Germanium

Ge

300

Mo

Molybdenum 

300

33

Arsenic

400

29

Copper 

400

Co

Cobalt

400

Nitobium 

Nb

400

Pd

Palladium 

400

48

Cadmium

500

41

Nitobium

500

Tc

Technetium 

500

Strontium

Sr

500

In

Indium

500

27

Cobalt

M
e
n
u