In diamond and graphite the percentage of S-characters of the Hybrid orbitals in Hybridization are respectively
75 and 25
50 and 50
25 and 33
25 and 75
Carbon hybridization in diamond is SP3 carbon Hybridization in graphite is SP2
%S in SP3=14×100=25%%S in SP2=13×100=33.33%≈33