The atoms retain all of their physical properties (i.e. mass, density, etc.) except when a covalent bond occurs, electrons are involved. The two atoms that form a covalent bond (usually C, N, O, F, S) will each share the electrons that are currently available in their valence shell (the outer shell, usually P orbital).
a covalent bond in which two atoms share two pairs of electrons.
remains the same
electrons are shared between one or more atoms.
If you mean what does it look like? That depends on the atoms involved. If you mean what is meant by covalent bond? That means that the two atoms share electrons so that each acts more complete.
Electrons are shared equally by two atoms.
formation of a covalent bond
both atoms gain electrons
Bonds are broken between the atoms of the reactants, and new bonds are formed during the formation of the products.
They form covalent bonds.
Formation of covalent bonds.
electrons are exchanged... ur welcome lol ;-)
a covalent bond in which two atoms share two pairs of electrons.
The pairs of electrons are shared between atoms.
remains the same
The outer shell electrons of the atom form covalent bonds.
they form a covalent bond
They are shared by the valence shells of the atoms involved in the bond.