A I think I could be wrong I’m not good at this
Answer:
Nitrogen will called as atom or molecule or ion too in the state which it exist means in which form it is present .
All of them are soluble salt.
First one dissociates into two ions.
The second one dissociates into 3 ions.
The third dissociate into 4 ions. therefore, Al(NO3)3
The Answer is D cause of the people going back and forth.
