Why do two atoms come together to form a covalent bond?
(a) Attractive forces between the positively charged nuclei and the electrons in both atoms occur when the atoms are close together.
(b) Repulsive forces between protons in the nuclei of the two atoms are minimized when the atoms are close together.
(c) Repulsive forces between electrons in the two atoms are minimized when the atoms are close together.
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Master Chemical Bonds with a bite sized video explanation from Jules Bruno