Element of intro wrong: information to follow (8)
I believe the answer is:
nitrogen
'element' is the definition.
(chemical element)
'intro wrong information to follow' is the wordplay.
'wrong' indicates an anagram.
'information' becomes 'gen' (gen can informally mean information).
'to follow' is a charade indicator (letters next to each other) (some letters go after or follow others).
'intro' with letters rearranged gives 'nitro'.
'nitro'+'gen'='NITROGEN'
'of' acts as a link.
(Other definitions for nitrogen that I've seen before include "Most prevalent gas in air" , "Common gas, N" , "creates much atmosphere" , "Major constituent of air" , "It constitutes 78 percent of the atmosphere" .)