☾ Valence electron - electron in the outermost shell of an atom. It corresponds to the
group number (vertically).
☾ Electronegativity - the ability of an atom in a chemical bond to attract electrons toward
itself. Atomic radius increases, electron negativity also increases.
☾ Exemption to the octet rule
☆ Incomplete octet
☆ Molecules with odd number of electron
☆ Expanded Octet
☾ Bond pair - line
☾ Lone Pair - two dots (unshared)
☾ Ionic - electrons are transferred (accept/donate)
☾ Covalent - electrons are shared
☾ Polarity - how electrons are shared
- Represents chemical bond and valence electron in a molecule
GUIDE:
- Draw a skeletal structure of the molecule
- put the bonded atoms next to each other (MAIN GOAL: fulfil the octet rule)
- If the valence electrons are not enough, make multiple bonds.
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group number (vertically).
☾ Electronegativity - the ability of an atom in a chemical bond to attract electrons toward
itself. Atomic radius increases, electron negativity also increases.
☾ Exemption to the octet rule
☆ Incomplete octet
☆ Molecules with odd number of electron
☆ Expanded Octet
☾ Bond pair - line
☾ Lone Pair - two dots (unshared)
☾ Ionic - electrons are transferred (accept/donate)
☾ Covalent - electrons are shared
☾ Polarity - how electrons are shared
- Represents chemical bond and valence electron in a molecule
GUIDE:
- Draw a skeletal structure of the molecule
- put the bonded atoms next to each other (MAIN GOAL: fulfil the octet rule)
- If the valence electrons are not enough, make multiple bonds.
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