Step-by-step explanation:
The correct order of charges depends on their sign as follows:
If Q1 and Q3 are opposite in sign, they will attract each other, and the direction of the force between them will be from Q1 to Q3.
If Q2 and Q3 are the same in sign, they will repel each other, and the direction of the force between them will be away from Q2 and towards Q3.
The magnitude of the force between two charges depends on the distance between them and the value of the charges. The force is stronger if the charges are larger and closer together, and weaker if they are smaller and farther apart.