Chapter_5 Sep_24 Lecture_15.pptx

Diatomic molecules contain 2 atoms homonuclear same

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Diatomic molecules : contain 2 atoms Homonuclear : same atom Heteronuclear : different atom Polyatomic molecules contain more than two atoms. Some Definitions… Homonuclear diatomic Heteronuclear diatomic Polyatomic Which category is O 2 ? Homonuclear diatomic ? What about ozone O 3 ? Homonuclear polyatomic ?
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Allotrope Allotrope : one of two or more distinct forms of an element -- molecular oxygen and ozone = both oxygen -- diamond and graphite = both carbon Fullerene/buckyball/C 60 Graphene Carbon nanotubes
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Different Types of Formula 6 Molecular Formula : shows exact number of atoms of each element in a molecule Subscripts indicate number of atoms of each element present in the formula Example: H 2 O, C 12 H 22 O 11 Structural formula : how atoms are connected (HOH) Empirical formula : tells what elements are present in a molecule with simplest whole-number ratio Formula of ionic compound is empirical formula Molecular(true) Empirical(simplest) H 2 O 2 HO N 2 H 4 NH 2 H 2 O H 2 O
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Empirical Formula
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5.6 Naming Molecular Compounds binary molecular compounds - consist of just two different elements.
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  • Fall '16
  • hawk
  • Atom, Molecule, Ion, Chemical bond, Naming Molecular Compounds

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