Tiêu đề Chemistry 9th chapter 3-Chemical Bonding@Textbooks All.pdf ✅

Chemical Bonding The arrangement of eight electrons in the outermost shell, as in noble gases, is known as octet configuration. The force of attraction that holds together the constituent particles of a compound is called a chemical bond. The amount of energy required to remove the most loosely bound electron from the outermost shell of an isolated gaseous atom of an element is called its ionisation energy.
Electron dot diagram The electrostatic force of attraction that holds together the oppositely charged ions in an ionic compound is called ionic bond. Ionic bond is also known as electrovalent bond.
The compounds that are formed by ionic bonding are known as ionic compounds or electrovalent compounds. Characteristics of ionic compounds • Ionic compounds are generally soluble in polar solvents such as water. • They are non volatile and hard. • They exist as crystals in solid state. • Generally, they have high melting points and boiling points. The chemical bond formed as a result of the sharing of electrons between the combining atoms is called a covalent bond. The covalent bond formed by the sharing of one pair of electrons is a single bond. A double bond is the covalent bond formed by the sharing of two pairs of electrons. A triple bond is the covalent bond formed by the sharing of three pairs of electrons.