In this post, question answer of structure of atom are provided which includes NCERT questions as well. 1. What are canal rays? Answer: Canal rays are positively charged radiations which led to the discovery of positively charged sub-atomic particle called proton. 2. If an atom contains one electron and one proton, will it carry any charge […]
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In this post you will learn about valence electrons and valency, isotopes, isobars and fractional atomic masses of certain elements. What are valance electrons? The electrons in the outermost shell of an atom take part in all the chemical reactions given by that element. Thus, these electrons describe the combining capacity or valency of an
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In this post we will discuss about Bohr’s model of an atom, Bohr-Bury scheme, how to write electronic configuration of an element and nuclear composition. Rutherford’s nuclear model of atom, although a great contribution to the science, could not explain certain observations. A brilliant description of atomic structure was proposed by Neil Bohr in 1913.
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In this post we will discuss about Rutherford and Thomson Model of an atom. After the discovery of electrons and protons, Sir J.J. Thomson proposed the atomic model. This is described below. What is J J Thomson Model of the atom? In 1898, Sir J J Thomson proposed a model of the atom. This model
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In this post, we will discuss about the anode rays and the discovery of proton and neutron. Anode Rays (Positive Rays or Canal Rays) During his working with cathode rays, Sir J J Thomson had noticed a red glow around the cathode, but on the side opposite the anode. To know the reason for this
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This post includes the topics of Class 9 Chapter 4 Structure of Atom, i.e., Cathode rays and the JJ Thomson model and the discovery of electron. Atoms are too small to be seen even with the most powerful microscope and, too light to be weighed even on the most sensitive balance. In this chapter, we
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