In HS^(-), I^(-), R-NH_(2), NH_(3), order of proton accepting tendency will be

In HS^(-), I^(-), R-NH_(2), NH_(3), order of proton accepting tendency

1.	In HS^(-), I^(-), R-NH_(2), NH_(3), order of proton accepting tendency will be
Answer» `I^(-) gt NH_(3) gt R - NH_(2) gt HS^(-)` `NH_(3) gt R - NH_(2) gt HS^(-) gt I^(-)` `R-NH_(2) gt NH_(3) gt HS^(-) gt I^(-)` `HS^(-) gt R - NH_(2) gt NH_(3) gt I^(-)` Solution :In `R-NH_(2)`, electron pair on N is most easily AVAILABLE for protonation because R is eletron releasing group.