Which of the following is second most electronegative element

After fluorine, the most electronegative element is 0xygen as per Pauling's scale of electronegativity. 

${\mathrm{\chi }}_{\mathrm{F}}=4.0.{\mathrm{\chi }}_{\mathrm{Cl}}=3.0.{\mathrm{\chi }}_0=3.5,{\mathrm{\chi }}_{\mathrm{s}}=2.5$