Railway Exam » Railway Exam Study Materials » Chemistry » What Is a Chemical Bond?

What Is a Chemical Bond?

An overview of an important topic: Chemical Bond. This note covers the definition and different types of bonds like ionic bonds or what are covalent bonds.

Chemical bonding is an essential phenomenon in nature because it joins two or more identical or different molecules. Not only molecules, but it joins other ions or atoms as well. This phenomenon helps different substances lower their energy and be more stable. Chemical bonding also helps to create chemical compounds. 

Chemical bonding can be done in various ways. You need to know what ionic bonds are or covalent bonds and their processes. Also, there are two different types of bonds, such as strong or primary bonds and weak or secondary bonds and their way of formation.

Definition Of Chemical Bond

A chemical bond is a lasting force of attraction connected to two or more ions, molecules, or atoms through various processes to make basic or compound chemical structures.

There is a mutual attraction between nuclei and electrons of different atoms in chemical bonds. This attraction binds together when they are chemically bonded. Most atoms are less stable differently, but the scenario changes during bonds.

In chemical bonds, potential energy gets decreased. This causes a chemical bond to be more stable than a single atom.

Importance Of Chemical Bonding

All atoms need their last electrons. Only hydrogen and helium need 2 electrons at the last orbit. The atom isn’t stable when the orbit is not completed with 8 electrons. Through bonding definition chemistry, the atoms get more stable. 

All the atoms get 8 electrons in the last orbit in chemical bonding, known as the octet rule. For hydrogen and helium, they follow the duet rule to get stable.

Types Of Chemical Bonding

There are different ways to form a chemical bond. For other types of this, it is essential to know what bonds are there in chemistry. Getting linked between two or more molecules is known as bonds. A chemical bond can be done through ionic charges, electromagnetic forces, or attractive electrostatic forces. This can also be done through the mutual sharing of electrons, actually those are covalent bonds.

Ionic bonds happen between one metal and one non-metal element where the metal provides an electron to the non-metal element.

On the other hand, a covalent bond generally happens in both non-metal elements. Both of them share an equal number of electrons to make bonds.

For a metallic bond, both the elements need to be metal. In this case, both share free electrons and create electron clouds. Both the metals make a chemical bond.

Some molecules, which have permanent dipoles, can have dipole-dipole bonds. These bonds get done through electrostatic interactions.

Sometimes two or more molecules or atoms have symmetrical electron spreads. If both of them make a chemical bond, then the force that acts to make the bond is known as London dispersion forces. Though by sharing electrons, this bond is formed, which is entirely different from the electron sharing bond.

Strength of Chemical Bonds

According to the type of bond, the bond strength differs. For some bonds, it becomes strong, and for others, it becomes weak. In other words, the type of bond decides the strength of a bond.

Ionic, metallic, or sharing bonds, create a Strong bond. Primary bonds and strong bonds are entirely the same things. Dipole-dipole interactions, London dispersion forces, and hydrogen bonding create secondary or weak bonds.

Chemical bonds help make a molecule more stable, but it helps a molecule get into chemical reactions. A chemical bond can happen between all the states of a matter. In other words, solids, liquids, or gaseous, despite their form an element can have chemical bonds. You can understand chemical bonding better by knowing what Covalent bonds or ionic, metallic, or dipole-dipole bonds are. The element gets into a lower energy level if it has a chemical bond. This phenomenon helps the element to be more stable.

Conclusion

Knowing different types of bonds, like what are covalent bonds or ionic bonds, it will be easy to identify which bond has which type of elements. Also, by knowing a metallic bond or a hydrogen bond, it will be easy to determine if that’s a strong or a weak bond. 

Chemical bonds are essential to keep an element at a lower energy level and more stable. As this helps elements take part in chemical reactions, the type and strength help to know the progress of the reaction.

faq

Frequently asked questions

Get answers to the most common queries related to the Railway Examination Preparation.

How do chemical bonds help in everyday life?

Ans. The most everyday usage element, water, has chemical bonds. There...Read full

Can a chemical bond create any food substance?

Ans. Salt, a food substance, gets created with the help of chemical bo...Read full

Is there any chemical bond in the air?

Ans. Well, yes, of course, there is. The most necessary element in the...Read full

How does a chemical bond help an element?

Ans. Chemical bonds help an element by completing the valent orbit of the electron. The element gets eight el...Read full

Crack Railway Exam with Unacademy

Get subscription and access unlimited live and recorded courses from India’s best educators

Notifications

Get all the important information related to the Railway Exam including the process of application, important calendar dates, eligibility criteria, exam centers etc.

Access more than

6,505+ courses for Railway Exams 

Get the learning app

Download lessons and learn anytime, anywhere with the Unacademy app