in difference between co valent and ionic compounds it was mentioned molecular and ionic reactions briefly can you please elaborate on what are ionic bonds and what are molecular bonds and some differences between them.
There are two types of atomic bonds - ionic bonds and covalent bonds. They differ in their structure and properties. Covalent bonds consist of pairs of electrons shared by two atoms, and bind the atoms in a fixed orientation. Relatively high energies are required to break them (50 - 200 kcal/mol). Whether two atoms can form a covalent bond depends upon their electronegativity i.e. the power of an atom in a molecule to attract electrons to itself. If two atoms differ considerably in their electronegativity - as sodium and chloride do - then one of the atoms will lose its electron to the other atom. This results in a positively charged ion (cation) and negatively charged ion (anion). The bond between these two ions is called an ionic bond.
Comparison chart Covalent Bonds versus Ionic Bonds comparison chart Covalent Bonds Ionic Bonds Polarity Formation Shape What is it? Melting point Examples Occurs between Boiling point State at room temperatureLow | High |
A covalent bond is formed between two non-metals that have similar electronegativities. Neither atom is "strong" enough to attract electrons from the other. For stabilization, they share their electrons from outer molecular orbit with others. | An ionic bond is formed between a metal and a non-metal. Non-metals(-ve ion) are "stronger" than the metal(+ve ion) and can get electrons very easily from the metal. These two opposite ions attract each other and form the ionic bond. |
Definite shape | No definite shape |
Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds. | Ionic bond, also known as electrovalent bond is a type of bond formed from the electrostatic attraction between oppositely charged ions in a chemical compound. These kinds of bonds occur mainly between a metallic and a non metallic atom. |
low | High |
Methane (CH4), Hydro Chloric acid (HCl) | Sodium chloride (NaCl), Sulphuric Acid (H2SO4 ) |
Two non-metals | One metal and one non-metal |
Low | High |
Liquid or gaseous | Solid |