Fill in the blanks 1- SN2 reaction take place with . of configuration at the chiral center undergoing substituion. 2- The inorganic compound which can distinguish between 1-pentyne and 2-pentyne is.. 3- The number of chiral centers in CH,CHCICH,CH,CHBRCH, is 4- The number of tertiary carbons are found in 2,3- dimethylpentane is 5- The type of hybridization in methyl radical ( CH, ) is 6-The stereochemical relationship between (2R,3R,4R)- trichlorohexane & (25,35,4R)- tricholohexane (enatiomers or diastereomers ) ? .. 7- Free radical substitution reactions are associated with ( homolytic or heterolytic ) Nu 8- The mechanism indicates (nucleophilic addition or nucleophilic :0 H. substitution ? 9- The more reactive halide, towards E2 reactions, is ( 1-bromopentane, 2-bromopentane) 10- An alkene with the molecular formula C,H, is treated with ozone and then with zinc and acetic acid. The product isolated from these reactions is .