Answer:A single bond is a chemical bond between two atoms in which they share one pair of electrons. This is the simplest type of covalent bond, and it is formed when two atoms need to complete their outer electron shells by sharing a pair of electrons. The sharing of these electrons creates a stable molecule by balancing the electrostatic forces between the positively charged atomic nuclei and the negatively charged electrons. Single bonds can be found in many molecules, such as HCl, H2O, and CH4. They are typically weaker than double or triple bonds, which involve the sharing of two or three pairs of electrons, respectively.