Dear Student,
The effective capacitance of the capacitor will be more when the capacitors are connected in parallel.
The energy stored in the capacitor is given as,
From the above relation we can see that the energy stored in the combination is more when the capacitors are connected in parallel.
Change on the capacitor is given as,
From the above relation we can see that the change stored in the combination is more when the capacitors are connected in parallel.
Regards,