The charge of the capacitor is known Then what is the charge of each pole plate? Half or? How to understand

You have to know that the potential difference between the two ends of the capacitor is caused by the movement of electrons, electrons are negatively charged, a negative charge of -Q on one pole plate, then there must be a positive charge of +Q on the other pole plate, but the number of electrons is a certain number of electrons, capacitors can only discharge a maximum of Q of the electrons when discharging, so the capacitor's charge is Q