<Tr> <Td_colspan="7"> Commonly recognized (93%): B, Si, Ge, As, Sb, Te Irregularly recognized (44%): Po, At Less commonly recognized (24%): Se Rarely recognized (9%): C, Al Arbitrary metal - nonmetal dividing line: between Be and B, Al and Si, Ge and As, Sb and Te, Po and At </Td> </Tr> <Tr> <Td_colspan="7"> <P> Recognition status, as metalloids, of some elements in the p - block of the periodic table . Percentages are median appearance frequencies in the list of metalloid lists . The staircase - shaped line is a typical example of the arbitrary metal--nonmetal dividing line found on some periodic tables . </P> </Td> </Tr> <P> Recognition status, as metalloids, of some elements in the p - block of the periodic table . Percentages are median appearance frequencies in the list of metalloid lists . The staircase - shaped line is a typical example of the arbitrary metal--nonmetal dividing line found on some periodic tables . </P> <Table> <Tr> <Th_colspan="2"> Element </Th> <Th> Citations </Th> <Th> Frequency </Th> </Tr> <Tr> <Th_colspan="2"> </Th> <Th> in n = 194 publications </Th> <Th> 194 = 100% </Th> </Tr> <Tr> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> </Tr> <Tr> <Th> Arsenic </Th> <Td> As </Td> <Td> 191.5 </Td> <Td> 99% </Td> </Tr> <Tr> <Th> Tellurium </Th> <Td> Te </Td> <Td> 190.5 </Td> <Td> 98% </Td> </Tr> <Tr> <Th> Germanium </Th> <Td> Ge </Td> <Td> 184.5 </Td> <Td> 95% </Td> </Tr> <Tr> <Th> Silicon </Th> <Td> Si </Td> <Td> 183.5 </Td> <Td> 95% </Td> </Tr> <Tr> <Th> Antimony </Th> <Td> Sb </Td> <Td> 169.5 </Td> <Td> 87% </Td> </Tr> <Tr> <Th> Boron </Th> <Td> </Td> <Td> 166 </Td> <Td> 86% </Td> </Tr> <Tr> <Th> Polonium </Th> <Td> Po </Td> <Td> 93.5 </Td> <Td> 48% </Td> </Tr> <Tr> <Th> Astatine </Th> <Td> At </Td> <Td> 78 </Td> <Td> 40% </Td> </Tr> <Tr> <Th> Selenium </Th> <Td> Se </Td> <Td> 46 </Td> <Td> 24% </Td> </Tr> <Tr> <Th> Aluminium </Th> <Td> Al </Td> <Td> 18 </Td> <Td> 9.3% </Td> </Tr> <Tr> <Th> Carbon </Th> <Td> </Td> <Td> 16.5 </Td> <Td> 8.5% </Td> </Tr> <Tr> <Th> Bismuth </Th> <Td> Bi </Td> <Td> 11.5 </Td> <Td> 5.9% </Td> </Tr> <Tr> <Th> Phosphorus </Th> <Td> </Td> <Td> 10 </Td> <Td> 5.2% </Td> </Tr> <Tr> <Th> Beryllium </Th> <Td> Be </Td> <Td> 7.5 </Td> <Td> 3.9% </Td> </Tr> <Tr> <Th> Tin </Th> <Td> Sn </Td> <Td> 5.5 </Td> <Td> 2.8% </Td> </Tr> <Tr> <Th> Sulfur </Th> <Td> </Td> <Td> </Td> <Td> 1.5% </Td> </Tr> <Tr> <Th> Livermorium </Th> <Td> Lv </Td> <Td> </Td> <Td> 1.5% </Td> </Tr> <Tr> <Th> Iodine </Th> <Td> </Td> <Td> 2.5 </Td> <Td> 1.3% </Td> </Tr> <Tr> <Th> Flerovium </Th> <Td> Fl </Td> <Td> </Td> <Td> 0.5% </Td> </Tr> <Tr> <Th> Gallium </Th> <Td> Ga </Td> <Td> </Td> <Td> 0.5% </Td> </Tr> <Tr> <Th> Hydrogen </Th> <Td> </Td> <Td> </Td> <Td> 0.5% </Td> </Tr> <Tr> <Th> Lead </Th> <Td> Pb </Td> <Td> </Td> <Td> 0.5% </Td> </Tr> <Tr> <Th> Moscovium </Th> <Td> Mc </Td> <Td> </Td> <Td> 0.5% </Td> </Tr> <Tr> <Th> Tennessine </Th> <Td> Ts </Td> <Td> </Td> <Td> 0.5% </Td> </Tr> </Table>

Which one of the following is a metalloid