S o l v e t h i s : E n t h a l p y o f f o r m a t i o n i s z e r o f o r ( 1 ) D i a m o n d ( 2 ) G r a p h i t e ( 3 ) C l ( a q ) ( 4 ) A l l o f t h e s e Share with your friends Share 0 Basudeb Chatterjee answered this Graphite. 1 View Full Answer