![]() SummaryĬhemical bonds are produced when the outer-shell electrons are either transferred or shared from one atom to another. The bond that results whenever unequal sharing occurs is called polar covalent bond while equal sharing of electrons is called non polar covalent bond. Since neither can easily lose electron, sharing occurs and a covalent bond is formed.Ĭovalent bond is the bond formed in which two atoms share a pair of electrons and form molecules. Make clear that H needs one electron to attain a stable 1s 2 outer shell configuration, and F needs one electron to attain an octet. What is the nature of the bond formed between H and F in the molecule HF? A typical example of an ionic or electrovalent bond is the bond formed between sodium and chlorine atoms when they enter into chemical combination. However, the ions are free and exist as separate particles whether they are in dissolved or solid form. This attractive force constitutes the ionic bond otherwise called electrovalent bond. Since these ions have opposite charges, there is an attractive force between them. A positively charged ion is called cation, and a negatively charged ion is called an anion. That one from which the electron(s) have been removed has more protons than electrons and is therefore positively charged. ![]() ![]() After the transfer has occurred, the atom, which gained the electron(s), now contains more electrons than protons thus, it is negatively charge. This transfer occurs from one who has a lesser attraction to one who has a greater attraction for electrons. ![]() An ionic bond is formed in a compound when the electrons from the outermost shell of an atom are actually transferred to the outermost shell of the combining atom. ![]()
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