why 1pentene does not show geometric isomerism but 2pentene does. give reason
Answers
for a compound to show geometric isomerism the groups attached to the double bonded carbon should be different. in 1 pentene the the groups attached to the double bonded carbon is the same (ie.both are hydrogen) but in 2pentene the the groups attached are different (one is hydrogen and the other is an alkyl group)
Explanation:
Pent-1-ene doesn't show geometrical isomerism because in pentene there is 2 hydrogen attached in one side, and to show geometrical isomerism the group attached to the double bonded carbon should be different. If it contains similar group then geometrical isomerism isn't possible. And pent-2-ene show geometrical isomerism because it contains two different group attached to double Bond carbon. So, Here geometrical isomerism is possible.
If any compound shows geometrical isomerism then we have to check that it's cis or tarns
How to check ?
Answer -
If group attached to the double bonded carbon is in same side then it is cis and if group attached to the double bonded carbon is in opposite side then it is trans.
