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covalent bond
a bond where two nuclei of nonmetals are bonded together by their mutual attraction to the same pair of electrons
how does a covalent bond occur?
two nonmetal atoms collide so that the nuclei are closer than two times the radius
the electron pair is drawn to the internuclear distance where they can create a concentration of charge
side ways repulsion increased
mutual attraction to same pair of electron bonds atoms together
creates a covalent bond
differences between ionic and covalent bonds
ionic:
attraction from ions in all directions
non localized and non directional
all ions pack together
forms ionic crystal lattice
covalent
attraction is localized to the internuclear distance
attraction is directional along internuclear distance
ex. in a H2 bond, another extra hydrogen will not bond as no attraction is available
forms molecule
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