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Chemistry

Grade 11: Atomic Combinations: Molecular Structure

TermDefinition
Chemical bond A mutual attraction between two atoms resulting from the simultaneous attraction between their nuclei and the outer electrons.
Lewis dot diagram A structural formula in which valence electrons are represented by dots or crosses.
Valence electrons Outer electrons are the electrons in the highest energy level of an atom in which there are electrons.
Covalent bond The sharing of electrons between two atoms to form a molecule.
Molecule A group of two or more atoms covalently bonded and that function as a unit.
Bonding pair A pair of electrons that is shared between two atoms in a covalent bond.
Lone pair A pair of electrons in the valence shell of an atom that is not shared with another atom.
Electronegativity A measure of the tendency of an atom in a molecule to attract bonding electrons.
Non-polar covalent bond A bond in which the electron density is shared equally between the two atoms.
Polar covalent bond A bond in which the electron density is shared unequally between the two atoms.
Bond energy The energy needed to break one mole of its molecules into separate atoms.
Bond length The average distance between the nuclei of two bonded atoms.
Created by: StiKManLabs
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