No doubt, ionic and covalent bonds are different according to bonding formation, but they are similar in many ways. First of all, it is a must to know what is an ionic and covalent bond?
What is an Ionic Bond?
An ionic bond is formed when two oppositely charged ions come near to each other and connect. Both ions attract one another and result in the loss and gain of the electrons from the outermost shell to complete the octet. Octet means acquiring 8 electrons in the outer shell.
Some ions get positive, and some get a negative charge. Ions that lose electrons get a positive charge and have more protons than electrons. Negatively charged ions gain electrons instead of losing and have more electrons than protons. In an ionic bond, complete loss or gain of electrons takes place between the ions.
What is a Covalent Bond?
The covalent bond is the sharing of electrons between the atoms and has the complete valence shell. The valency of the covalent bond, through the outermost shell, tells the need for electrons. It works differently than an ionic bond. The constituent atoms continue sharing the bond through their valence shells until an external force breaks them.
Let’s take a look at the brief table between ionic and covalent bonds.
|Factors||Ionic Bond||Covalent Bond|
|Type of Bonding||Through the|
Transfer of Ions
|By Sharing Electrons|
|Follow Octet Rule||Yes||Yes|
|Type of Reaction||Exothermic||Exothermic|
|Show Fixed Pattern||Show Fixed Pattern|
|Changes Shape||Changes Shape|
|Changes Shape||Changes Shape|
|Solubility||In Polar Compounds||In Non-Polar Compounds|
|Takes Place In||Metals & Non-Metals||Non-Metals Only|
Similarities between Ionic and Covalent Bond:
The following are the similarities between the ionic and covalent bonds.
- Both Ionic and covalent bonds complete their outermost shell with eight electrons. In other words, they follow a complete octet rule.
- Both ionic and covalent bonds have the same bonding method techniques. As the two atoms come close to each other, the nuclei of both atoms attract each other. Furthermore, the bond will have a high covalent character if the electrons’ attractions of the neighboring atoms and the nuclei of bonded atom are the same. When the attraction becomes more polarized, the bond considers having an ionic character.
- Ions are formed by the electrostatic force of attraction in both ionic and covalent bonds. In the case of ions, anion and cation are positive and negative charges formed by losing or gaining electrons. While in a covalent bond, electrons in the valence shell are shared directly between the atoms.
- Both bonds give stability to the bonded atoms than individually and in both electrons of the valence shell take part while making the bond.
- The molecules that are formed from the ionic and covalent bonds are neutral. This is because, in an ionic bond, two opposite charges cancel each other while in a covalent bond, neutral components shared the pair of electrons.
- Ionic and covalent, both are exothermic processes. When two elements make bonds (ionic or covalent) lower their potential energy. During this reaction, energy is released in the form of heat.
- Both ionic and covalent bonds share fixed quantities during bond formation. In an ionic bond, an excessive charge is found on the elements. A fixed amount of ions that join together to make the compound, depends on this excessive charge on the ions. In a covalent bond, elements shared the fixed amount of electrons that they needed to complete their valence shell.
- Both show the regular pattern and structure in a solid or crystalline state.
- When both compounds face the right temperature and pressure, they changed their shape physically.
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