Atoms involved in a bond equally share electrons; there is no charge separation to the molecule.

Covalent bond

Explanation:

In Covent bonds, atoms share electrons equally and there's is no charge separation to the molecule. This is a result of the fact that when two or more elements come together to form a covalent bond, they share their valence electrons equally since both elements have similar electro negativity. Covalent bonds can go as far as creating double or triple bonds sharing electrons equally between two atoms of relatively equal magnitude of electro negativity. The major factor that leads to the formation of covalent bonds is the electro negative relationship between the two elements coming together.

there is none because earth is stationary and flat.