Step1 white ppt with NaCl(aq) indicates Ag+ Step2 Passing H2S in acidic salt solution ; no ppt being formes indicates absence of group II ; Cu+2 and Cd+2 are absent. Step3 Passing H2S in basic condition ; formation of ppt marks presence of group IV Step4 Possible ions are Ag+; Ni+2 ;Mn+2 ; Na+ Solution Step1 white ppt with NaCl(aq) indicates Ag+ Step2 Passing H2S in acidic salt solution ; no ppt being formes indicates absence of group II ; Cu+2 and Cd+2 are absent. Step3 Passing H2S in basic condition ; formation of ppt marks presence of group IV Step4 Possible ions are Ag+; Ni+2 ;Mn+2 ; Na+.