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How many atoms lie in a straight line in the molecule 2-butyne, CH₃C≡CCH₃?
a. 10
b. 8
c. 6
d. 4
e. 2



Answer :

The carbons from the double link lie in a straight line, together with the neighbouring carbons. The hydrogens lie in a tetrahedrical configuration, so none could be counted. Final answer: 4.

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