The account will cause an explosion! (6)
I believe the answer is:
report
I believe this clue is a double definition.
'the account' is the first definition.
('report' can be a synonym of 'account')
'an explosion' is the second definition.
(I've seen this before)
'will cause' is the link.
(Other definitions for report that I've seen before include "Make a complaint about (someone)" , "A loud bang, or an account" , "Sudden noise; account of progress" , "Article" , "School student's assessment" .)