How many isomers are possible for a formula of #C_2H_5Br#? Organic Chemistry E and Z, Cis and Trans Alkenes Cis and Trans 1 Answer anor277 Feb 2, 2017 #"One........."# Explanation: #"Ethyl bromide"# is the sole isomer possible for #C_2H_5Br#. What about for the formula, #C_2H_4Br_2#? Answer link Related questions Why are trans alkenes more stable than cis alkenes? Are #cis# and #trans# isomers examples of diastereomers? What are the nomenclature rules to assign cis or trans prefixes? How can I draw cis and trans isomers? What are cis and trans isomers? Why is cis and trans nomenclature important in organic chemistry? When can the molecule 2-butene, #C_4H_8#, undergo a geometric change called cis-trans isomerization? Why is the #pi# bond between the two central carbon atoms destroyed halfway through the rotation... Do either cis-#[3Co(en)_2Cl_2]^+# or trans-#[3Co(en)_2Cl_2]^-# have optical isomers? Which compound does not exist 1,2,3,4,5,6,7-octaheptaene, cis-2-butane, trans-3-hexene,... See all questions in Cis and Trans Impact of this question 6504 views around the world You can reuse this answer Creative Commons License