Asiya brohi on Nearpeer MDCAT Common Room

Sir ali meraj ap ne bola tha k oxidation number of an ion consisting more than one atom us ka oxidation number us k ionic charge k equal hoti hy ap SO4 ki example di thi jis pr charge -2 tha or ap ne bola tha is k oxidation number bhi -2 hy pr ma ne ai bot se puch to wo bol rha SO4 ka +6 hoga or us ne method bhi bataya mujha yeh method samjh nhi aaya kindly ap explain kr dein and anyone jis ko yeh concept pata ho to tell me