minimum two atoms are for single covalent bond
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Two atoms can form a single covalent bond where they share one pair of electrons.
A single covalent bond involves the sharing of two electrons between two atoms.
When atoms share electrons, they form a chemical bond, or covalent bond.
A carbon-carbon (C-C) bond is a covalent bond, where two carbon atoms share electrons to form a stable bond. Covalent bonds involve the sharing of electrons between atoms.
The chemical bond between two chlorine atoms is a covalent bond. In this bond, the atoms share a pair of electrons to form a stable molecule of chlorine gas (Cl2).
Two fluorine atoms each have 7 valence electrons, so they will share one electron to form a single covalent bond. Therefore, two fluorine atoms will form a single covalent bond between them.