6.2-Chap 2 Flashcards

Orbitales moléculaires

1
Q

Types de recouvrements orbitalaires

A
  • recouvrement axial
  • recouvrement latéral
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2
Q

recouvrement axial

A
  • recouvrement des O.A effectué selon l’axe des noyaux
  • de type sigma
    s-s, s-p, p-p
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3
Q

liaisons sigma

A
  • liaisons covalentes sont les plus fortes
  • peut exister qu’une seule entre deux atomes
    Liaisons supplémentaires = liaisons pi
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4
Q

recouvrement latéral

A
  • s’effectue latéralement
  • type pi
    px-px ou py-py
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5
Q

axes

A

vertical = x
horizontal = z
diagonal = y

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6
Q

Hybridation

A
  • utilisé pour expliquer les géométries des molécules observées
  • combinaison d’au moins 2 orbitales atomiques non équivalentes
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7
Q

l’hybridation de s’applique pas pour :

A

les atomes isolés

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8
Q

m+n = 2

A

hybridation sp

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9
Q

m+n = 3

A

hybridation²

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10
Q

m+n = 4

A

hybridation³

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11
Q

Qui ne peut pas former de liaisons dans un diagramme non-correlé?

A

de différentes orbitales

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