<Tr> <Th> 5 </Th> <Td> Rb 0.706 </Td> <Td> Sr 0.963 </Td> <Td> Y 1.12 </Td> <Td> Zr 1.32 </Td> <Td> Nb 1.41 </Td> <Td> Mo 1.47 </Td> <Td> Tc 1.51 </Td> <Td> Ru 1.54 </Td> <Td> Rh 1.56 </Td> <Td> Pd 1.58 </Td> <Td> Ag 1.87 </Td> <Td> Cd 1.52 </Td> <Td> In 1.656 </Td> <Td> Sn 1.824 </Td> <Td> Sb 1.984 </Td> <Td> Te 2.158 </Td> <Td> 2.359 </Td> <Td> Xe 2.582 </Td> </Tr> <Tr> <Th> 6 </Th> <Td> Cs 0.659 </Td> <Td> Ba 0.881 </Td> <Td> Lu 1.09 </Td> <Td> Hf 1.16 </Td> <Td> Ta 1.34 </Td> <Td> 1.47 </Td> <Td> Re 1.60 </Td> <Td> Os 1.65 </Td> <Td> Ir 1.68 </Td> <Td> Pt 1.72 </Td> <Td> Au 1.92 </Td> <Td> Hg 1.76 </Td> <Td> Tl 1.789 </Td> <Td> Pb 1.854 </Td> <Td> Bi 2.01 </Td> <Td> Po 2.19 </Td> <Td> At 2.39 </Td> <Td> Rn 2.60 </Td> </Tr> <Tr> <Th> 7 </Th> <Td> Fr 0.67 </Td> <Td> Ra 0.89 </Td> </Tr> <Tr> <Td_colspan="19"> See also: Electronegativities of the elements (data page) </Td> </Tr>

Electronegativity is an atoms ability to donate valence electrons to another atom