A. First: Two central carbons are bonded to C H subscript 3 above left and right, and to H below left and right. Second: Two ce
ntral carbons are bonded to H above left and below right, and C H subscript 3 above right and below left. B. 2 skeletal models. First: 3 central C atoms have C H 3 bonded at each end of the chain; C H 3 is bonded to the first of the 3, and 2, C H 3 are bonded to the third. The first and second central carbons are double bonded. Second: A chain of 3 central C’s have C H 3 bonded at each end, with C H 3 double-bonded bonded to the first of the 3, and 2, C H 3’s bonded to the third. C. 2 skeletal models: First: A 9 carbon chain, with the first two carbons double-bonded. Second: A 10 carbon chain, with the first 2 carbons double bonded. Which pairs of compounds are geometric isomers? A. B. C.
