Periodic Table of Elements
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Metalloids

7 elements

Alkali Metals 6 Alkaline Earth Metals 6 Transition Metals 38 Post-transition Metals 11 Metalloids 7 Reactive Nonmetals 7 Halogens 6 Noble Gases 7 Lanthanides 15 Actinides 15
5 B Boron 10.81 14 Si Silicon 28.085 32 Ge Germanium 72.63 33 As Arsenic 74.922 51 Sb Antimony 121.76 52 Te Tellurium 127.6 84 Po Polonium 208.982