 Antimony is in the nitrogen group ( group 15 ) and has an electronegativity of 2 @.@ 05 . As expected from periodic trends , it is more electronegative than tin or bismuth , and less electronegative than tellurium or arsenic . Antimony is stable in air at room temperature , but reacts with oxygen if heated , to form antimony trioxide , Sb2O3 . 
 Antimony is in the nitrogen group ( group 15 ) and <a href='got' title='1'><mark>has</mark></a> an electronegativity of 2 @.@ 05 . As expected from periodic trends , it <a href='drop_aux' title='2'><mark>is</mark></a>more electronegative than tin or bismuth , and less electronegative than tellurium or arsenic . Antimony <a href='drop_aux' title='3'><mark>is</mark></a>stable in air at room temperature , but <a href='uninflect' title='4'><mark>reacts</mark></a> with oxygen if heated , to form antimony trioxide , Sb2O3 . 
Antimony is in the nitrogen group ( group 15 ) and got an electronegativity of 2 @.@ 05 . As expected from periodic trends , it more electronegative than tin or bismuth , and less electronegative than tellurium or arsenic . Antimony stable in air at room temperature , but react with oxygen if heated , to form antimony trioxide , Sb2O3 .