Question

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What is meaning of E and Z configuration....? ​

Answer 1

Answer:

E comes from the German entgegen which means opposite. So the two isomers are: Summary. (E)- : the higher priority groups are on opposite sides of the double bond. (Z)- : the higher priority groups are on the same side of the double bond.

Explanation:

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Answer 2

Answer:-

E is for "Enemies", which are on opposite sides.

You don't, of course, need a way of remembering the Z as well - it's just the other way around from E.

In Z isomers, the higher priority groups are on zee zame zide. That works best if you imagine you are an American speaking with a stage German accent!

This is the way I remembered it when I first came across E-Z notation. It is more visual than the other methods.

It relies on the fact that the shapes of E and Z isomers are the opposite of the shapes of the letters E and Z.

In the letter E, the horizontal strokes are all on the same side; in the E isomer, the higher priority groups are on opposite sides. In the letter Z, the horizontal strokes are on opposite sides; in the Z isomer, the groups are on the same side.

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