In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically written as 4n+2 (n=0,1,2,3,etc)?
Which of the following statement is correct with respect to the Prashastis and land grants? I. Prashastis were composed by learned Brahmanas.
II. Kings often rewarded Brahmanas by grants of land which were recorded on copper plates.
