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Quiz

MO5 Bonding and Stereochemistry

Mer Scott 7 perguntas

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Perguntas do quiz (7)

  1. 1Choose the incorrect statement about sp3 hybridised atoms.
    1. AAn sp3 hybridised carbon has 4 bonds to it and is tetrahedral.
    2. BAn sp3 hybridised nitrogen has 3 bonds to it and one lone pair of electrons, and is tetrahedral.
    3. CAn sp3 hydridised oxygen has 2 bonds to it and one lone pair of electrons, and is tetrahedral.
  2. 2An sp hybridised Nitrogen has no lone pair of electrons.
    1. AVerdadeiro
    2. BFalso
  3. 3Choose the incorrect statement about sp2 hybridised atom.
    1. AAn sp2 hybridised carbon is trigonal planar shaped.
    2. BAn sp2 hybridised oxygen has one bond and two non bonding pairs of electrons.
    3. CAn sp2 hybridised nitrogen is fully saturated.
  4. 4Many drugs are formulated with salts which contain [blank_start]ionic[blank_end] bonds, where the electrons are [blank_start]not shared[blank_end].
    1. Aionic
    2. Bcovalent
    3. Cnot shared
    4. Dshared
  5. 5[blank_start]Stereoisomers[blank_end] are compounds with the same molecular formula and connectivity, but different geometry.
    If the compounds can be interconverted by rotation about a single bond, they are [blank_start]conformational[blank_end] stereoisomers. If not, they are [blank_start]configurational[blank_end] steroisomers.
    Configurational stereoisomers include:
    [blank_start]Geometric[blank_end] Isomers; those around a non rotational double bond, or [blank_start]optical[blank_end] isomers, those around a stereocentre.
    Optical isomers include [blank_start]enantiomers[blank_end], which are non superimposable mirror images of each other, and [blank_start]diastereomers[blank_end]; which are not mirror images but are non superimposable isomers.
    1. AStereoisomers
    2. Bconformational
    3. Cconfigurational
    4. DGeometric
    5. Eoptical
    6. Fenantiomers
    7. Gdiastereomers
  6. 6Which of these atoms cannot be a chiral centre?
    1. ACarbon
    2. BSulfur
    3. CNitrogen
    4. DPhosphorus
    5. EFluorine
  7. 7A nitrogen [blank_start]with[blank_end] a lone pair of electrons as the fourth substituent will readily [blank_start]invert[blank_end] at room temperature ie isomers of it cannot be [blank_start]isolated[blank_end]. For nitrogen to act as a [blank_start]stereocentre[blank_end] it cannot have a lone pair of electrons so it must be in the [blank_start]N+[blank_end] form.
    1. Ainvert
    2. Bwith
    3. Cisolated
    4. Dstereocentre
    5. EN+
    6. FN-

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Descrição
PHCY211 (Molecules) Quiz sobre MO5 Bonding and Stereochemistry, criado por Mer Scott em 08-04-2018.
Idioma
English
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