Covalent bonds are much stronger than hydrogen bonds: the $\ce{O-H}$ has a strength of 467 kJ/mol, while the hydrogen bond is usually between 4 to 40 kJ/mol. A covalent bond is a type of chemical bond characterized by the joint sharing of electron pairs between atoms. Covalent bonds form when atoms share valence electrons with other atoms to achieve a full shell of outer electrons. A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. A full outer shell usually has eight electrons, or two in the case of hydrogen or helium. Covalent bonds are chemical bonds between two non-metal atoms.An example is water, where hydrogen (H) and oxygen (O) bond together to make (H 2 O). A covalent bond is formed when two atoms share a pair of electrons. Covalent bonding occurs in most non-metal elements, and in compounds formed between non-metals. This is a picture of a water molecule. Water has a special type of covalent bond called a polar covalent bond. with oxygen to form two covalent bonds and make a water molecule (H 2 O). H2O, more commonly known as water, is a covalent compound. The covalent bond is the electrostatic interaction between two atoms in the same molecule. Figure \(\PageIndex{1}\): The Strength of Covalent Bonds Depends on the Overlap between the Valence Orbitals of the Bonded Atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. Covalent bonds differ from ionic bonds, which involve the removal or addition of electrons, and metallic bonds, which involve a non-localized sharing of electrons. I want to give the answer of your question in detailed so that you can understand the whole concept and picture behind it…. Valence electrons are the electrons held comparatively loosely in the outer shell of the atom. The relative sizes of the region of space in which electrons are shared between (a) a hydrogen atom and lighter (smaller) vs. heavier (larger) atoms in the same periodic group; and (b) two lighter versus two heavier atoms in the same group. A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding. let’s start…………. This type of compound is the result of atoms, usually from nonmetal elements, sharing electrons. By sharing the two electrons where the shells touch each hydrogen atom can count 2 electrons in its outer shell and the oxygen atom can count 8 electrons in its outer shell.