1. a chemical bond between atoms with similar electronegativities covalent bond 2. a measure of the ability of an atom to attract electrons within a chemical bond electronegativity 3. a bond between atoms of greatly differing electronegativities metallic bond 4. the bond formed in metals, holding metals together ionic bond

1. A covalent chemical bond results from the sharing of electrons between two atoms with similar electronegativities A single covalent bond represent the sharing of two valence electrons (usually from two different atoms). The Lewis structure below represents the covalent bond between two hydrogen atoms in a H2 molecule.

The answer is: 1. a chemical bond between atoms with similar electronegativities covalent bond.

Explanation:

If the electronegativity of the atoms that form the bond is similar, the electrons in the bond will be shared almost equally and a covalent bond will form. If the difference is very large, the electrons will be transferred to the most electronegative atom, forming an ionic bond.

The answer is: 1. a chemical bond between atoms with similar electronegativities covalent bond.