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Structural Isomerism in Chemistry

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Questions and Answers

What is the classical example of structural isomerism mentioned in the text?

Cyanate ion O=C=N− and fulminate ion C−≡N+−O− (correct)

Ammonium cyanate [NH4]+[O=C=N]− and urea (H2N−)2C=O

Ammonium acetate [NH4]+[H3C−CO2]− and methylammonium formate [H3C−NH3]+[HCO2]−

Methyl propyl ether H3C−(CH2)2−O−CH3 and diethyl ether (H3CCH2−)2O

Which term was formerly used for the same concept as structural isomer?

Polyatomic

Metamer (correct)

Classical

Stereoisomer

What distinguishes stereoisomerism from structural isomerism?

Number of atoms of each element

Relative spatial arrangement of atoms (correct)

Type of bonding between atoms

Total charge of polyatomic ions

Which type of isomerism concerns the most radical differences in atomic bonding and arrangement?

<p>Structural isomerism</p> Signup and view all the answers

What do enantiomers represent in terms of spatial arrangement?

<p>Mirror images of each other</p> Signup and view all the answers

Study Notes

Types of Isomerism

Butane and isobutane are classical examples of structural isomerism.
The term 'metamerism' was formerly used to describe structural isomerism.

Stereoisomerism vs Structural Isomerism

Stereoisomerism differs from structural isomerism in that it involves a difference in spatial arrangement of atoms, while maintaining the same bond sequence.
Structural isomerism, on the other hand, involves a difference in bond sequence, leading to distinct molecules.

Types of Isomerism

Structural isomerism concerns the most radical differences in atomic bonding and arrangement.

Enantiomers

Enantiomers represent non-superimposable mirror images of each other in terms of spatial arrangement.

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Description

Test your knowledge of structural isomers in chemistry with this quiz. Identify compounds with the same molecular formula but distinct structural arrangements of atoms and bonds.