Valence shell
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polar covalent bond
A covalent bond in which electrons are not shared equally
Electronegativity
A measure of the ability of an atom in a chemical compound to attract electrons
covalent bond
A chemical bond that involves sharing a pair of electrons between atoms in a molecule
Ion
An atom or group of atoms that has a positive or negative charge.
Ionic bond
Formed when one or more electrons are transferred from one atom to another
valence shell
The outermost energy shell of an atom, containing the valence electrons involved in the chemical reactions of that atom.
nonpolar bond
a covalent bond in which electrons are shared equally
Dipole
created by equal but opposite charges that are separated by a short distance