PERIODIC TABLE
Atomic # Element Atomic Weight Symbol
18 Argon 39.948 Ar
4 Beryllium 9.01218 Be
55 Cesium 132.9054 Cs
66 Dysprosium 162.5 Dy
68 Erbium 167.26 Er
9 Flourine 18.9984 F
31 Gallium 69.72 Ga
2 Helium 4.0026 He
77 Iridium 192.22 Ir
1