Isotopes: Definition, Meaning, Examples, Uses
All the atoms of a particular chemical element have the same number of protons in their nuclei, but the number of neutrons may be different.…
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What is Mass Number | How to Find it
In this chapter, we will understand what is mass number and how to find it with the help of solved examples. You have studied that…
What is Atomic Number | How to Find it
The number of protons present in the nucleus of each atom of an element is called atomic number of an element. Generally, it is represented…
Discovery of Neutron: Chadwick’s Experiment
In this chapter, we will understand the discovery of neutron discovered by James Chadwick in 1932. Up to 1932, it was considered that an atom…
Rutherford Atomic Model and Its Drawbacks
On the basis of the observations and conclusions of alpha particles scattering experiment, Rutherford proposed his nuclear model of atom in 1912. This atomic model…
Rutherford Scattering Experiment
In this chapter, we will understand Rutherford’s scattering experiment and its observations and conclusions. In order to understand the arrangement of charged particles like electrons…
Thomson’s Atomic Model: Plum Pudding Model of Atom
In this chapter, you will understand Thomson’s atomic model, also known as plum pudding model of atom and its drawbacks or limitations. After the discovery…
Discovery of Proton – Who Discovered It
In this chapter, we will explore the discovery of proton. As we know, atoms are the fundamental building blocks of matter, composed of three main…
What are Canal Rays: Discovery, Properties
In this chapter, we will understand what canal rays are, along with their discovery and properties. Canal rays, also known as anode rays, are streams…
What is Proton: Definition, Charge, Mass
In this chapter, we will understand the what is proton as well as its mass and charge. We know that an atom is electrically neutral.…
Charge on Electron by Oil Drop Experiment
In 1897, the experiment of J. J. Thomson precisely determined the charge to mass (e/m) ratio for an electron. In 1909, Robert A Millikan conducted…
Charge to Mass Ratio of Electron
The charge to mass ratio of an electron, often denoted as (e/me), is a fundamental physical constant that has significant implications for theories of an…
