互為鏡像但不能疊合的兩個分子，他們展現 ___________ 。

A molecule and its mirror image are non-superposable, then they exhibit _______________ .

互為鏡像但不能疊合的兩個分子，該分子稱為 ________ 。

A molecule and its mirror image are non-superposable, the molecule is said to be _________ .

互為鏡像而兩個分子是能疊合的，他們不能展現對映異構；該分子稱為 ________ 。

A molecule and its mirror image are superposable, they do not exhibit enantiomerism and the molecule is said to be ______________ .

對映異構體出現於與四個不同的原子或基團連接的碳原子。該碳原子稱為 __________。

Enantiomerism occurs in molecules that have a carbon atom with four different atoms (or groups) attached to it. That carbon atom is called ______________ .

下列數對分子中，那對是對映異構體？

In which of the following pairs are they enantiomers

of each other?

• 只有(1)

  (1) only

• 只有(2)

  (2) only

• 只有(1) 和(2)

  (1) and (2) only

• 只有(2) 和(3)

  (2) and (3) only

在哪個位置用「*」標示其化合物的結構式上的手性中心為正確？

Which is the correct labelling of the chiral centre in the molecule by using ‘*’ ?

• a

• b

• c

• d