How DO you close a Facebook account?
http://www.wikihow.com/Permanently-Delete-a-Facebook-Account
After going thru the motions, you have 14 days to reconsider.
If you log on to your ‘deleted’ account within that 14 days, it will be restored.
It can take up to 90 days for things you posted to others’ timelines to ‘disappear’ in the normal disposition of old posts.
After you have permanently deleted all and the 14 day period ends, all is lost...................