And there is a difference between Deactivating and Deleting your Facebook account.
Here's an article with all the details for both Deactivating as well as Deleting your Facebook Account.
answered Jun 10 '12 at 15:57
Login to your facebook account, go to Account settings, Under Security settings option, click on deactivate your account.
hope this helps
answered Jun 10 '12 at 11:53