On August 6 every year, the world observes the anniversary of the first use of the atomic bomb against Mankind at Hiroshima in Japan in 1945.
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From the knowledge of atomic number (Z) and mass number (A) of an element, one can determine the number of electrons, protons and neutrons in an atom of that element as follows. For an atom, were know..
According to the Bohr’s atomic model, the electrons revolve around the nucleus in certain orbits. These electrons are distributed in various orbits according to a scheme proposed by Bohr and Bury.
When an atom gains one or more electrons, a negatively charged ion is formed. Positively charged ion is called cation, and the negatively charged ion is called anion. Thus, A cation (positively charged ion) is formed when an atom loses one or more electrons.
No. the properties of an atom of any element are quite different from those of its ion. Ion is formed due to loss or gain of electron from an atom. In doing so, each atom acquires an electronic configuration of the nearest noble gas.
In 1913, Niels Bohr put forward his theory regarding the structure of an atom. He retained the main features of Rutherford’s nuclear model and proposed some modifications. The proposed model is known as Bohr’s model. Its salient features are as follows.
An atom is the smallest particle of an element that takes part in chemical reactions and maintains its chemical identity throughout all chemical and physical changes. Atoms of one element are different from the other elements.