Kabita Sharma 
The p-block elements with higher atomic numbers [e.g., Ga, In, Tl (Gr IIIA), Ge, Sn, Pb (Gr IVA), and As, Sb, Bi (Gr VA)], display two oxidation states they are: Higher oxidation states (Group oxidation states) These are equal to … Read more
Electron affinity is the energy released when an electron is added to a neutral, gaseous, and isolated atom in its ground state to form a monovalent anion. It is a quantitative measurement of the energy change caused by adding a … Read more
These are the compounds in which the central atom lacks eight electrons in its valence shell or possesses eight electrons but can expand the valency due to the presence of valence d-orbital. In short, electron-deficient compounds lack the electrons required … Read more
Aluminium is a noncorrosive lightweight silvery-white metal. It is included in the boron group (Group III a) in the periodic table. Aluminium is the most abundant metallic element on earth accounting for about 8% of the earth’s crust. It can … Read more
Physical adsorption, also known as physisorption, is a reversible phenomenon involving weak Van der Waals forces between adsorbate and adsorbent, whereas chemisorption is an irreversible phenomenon involving strong chemical interaction between adsorbate and adsorbent. S.N Physisorption Chemisorption 1. It is … Read more
The series of elements or ions in the increasing order of reduction potential or decreasing order of oxidation potential is known as the electrochemical series. From the electrochemical series, we can predict the feasibility of the reaction, the emf of … Read more
Nuclear reactions are the process in which two atomic nuclei or one atomic nucleus and a subatomic particle (such as a proton or neutron or high energy electron) collide to form one or more nuclides different from parent nuclei. In … Read more
Radioactivity is the phenomenon of spontaneous disintegration of certain nuclei into other elements with the emission of invisible active radiations. It is a natural phenomenon in which unstable atoms emit radiation to achieve stability. Discovery In 1896 Henri Becquerel discovered … Read more
In any compound, intermolecular forces of attraction and thermal force operate in opposite directions. The intermolecular force of attraction tends to keep the particles together while the thermal force tends to keep the particles apart. The extent of these forces … Read more