6. Which of the following terms correctly describes these compounds listed below? (A) conformational isomers (B) not isomers (C) stereoisomers (D) constitutional isomers (E) enantiomers

11. At some temperatures, the relative reactivities of 3°, 2° and 1° alkane hydrogens in free radical chlorination are in the ratio of 5:3:1. What would be the expected percentages of monochlorination of isopentane produced? (i) 2-chloro-2-methylbutane, (ii) combined 1-chloro-2-methylbutane and 1-chloro-3-methylbutane, and (iii) 2-chloro-3-methylbutane. (A) 10% (i), 75% (ii), 15% (iii) (B) 25% (i), 45% (ii), 30% (iii) (C) 29% (i), 44% (ii), 18% (iii) (D) 30% (i), 35% (ii), 35% (iii) (E) 36% (i), 43% (ii), 21% (iii)

6. Which of the following terms correctly describes these compounds listed below?

(A) conformational isomers
(B) not isomers
(C) stereoisomers
(D) constitutional isomers
(E) enantiomers

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