If you want to permanently delete your Facebook account, you’re in the right place. If you are sure of this step, please backup your information
Delete Facebook permanently
Note: Once the deletion process begins, you won’t be able to reactivate your account or retrieve any of the content or information you have added.
Go to Facebook’s deletion page.
Click on the link; https://www.facebook.com/help/delete_account
Click “Delete Account”
Clicking it invokes a pop-up window. Confirm your transaction by typing your “account password”
Account deletion can take up to 14 days, but your account will be gone from Facebook after that time frame. If you log in to your account, it becomes active again. It’s OK!