metalloid
chemical element with properties of both metals and nonmetals
antimony
chemical element with symbol Sb and atomic number of 51
germanium
chemical element with symbol Ge and atomic number 32
selenium
chemical element with symbol Se and atomic number 34
tellurium
chemical element with symbol Te and atomic number 52
boron
chemical element with symbol B and atomic number 5
arsenic
chemical element with symbol As and atomic number 33
silicon
chemical element with symbol Si and atomic number 14
astatine
chemical element with symbol At and atomic number 85