The electrons in un-ionic or non-ionic bonds occupy space in which at least two nuclear centers are contributing substantially to electrically attracting the electrons, whereas electrons in ionic bonds occupy space centered around a single nucleus as long as the ionic bonds are maintained.
The electrons are shared
all in + sd
depends on whether you are taking about a covalent bond or an ionic bond
One atom has lost electrons . And the other atom has gained electrons.
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Since calcium is a metal, it gives up electrons.
They are shared by the valence shells of the atoms involved in the bond.
They form a covalent bond.
they form a covalent bond
In a covalent bond, electrons are shared between atoms. These electrons are attracted to the positively charged nuclei of both atoms involved in the bond, creating a stable relationship between them. If a covalent bond is broken, the shared electrons are redistributed between the two atoms involved.
When one pair of electrons is shared, a single covalent bond exists. This bond can be either polar or nonpolar. If the electrons are equally shared, the bond is nonpolar. If the electrons are unequally shared, the bond is polar.
Four electrons are shared between two atoms.