Figure neon anew to be a gaseous element (5)
I believe the answer is:
xenon
'a gaseous element' is the definition.
(I've seen this before)
'figure neon anew' is the wordplay.
'figure' becomes 'x' (I can't explain this - if you can you should give a lot more credence to this answer).
'anew' indicates an anagram.
'neon' with letters rearranged gives 'enon'.
'x'+'enon'='XENON'
'to be' is the link.
Can you help me to learn more?
(Other definitions for xenon that I've seen before include "Noble gas used in lamps" , "Noble element" , "member of nobility?" , "Inert gas, Xe" , "Inert 18" .)