Classification of Elements and Periodicity

Mendeleev’s periodic law as well as periodic table were used to create the contemporary periodic table. Until then, scientists had no idea about the atom’s fundamental structure.The atomic number is by far the most basic feature of a chemical element, as revealed by the development of numerous atomic models and breakthroughs in quantum theory.  Modern […]

Define modern periodic law. Modern Periodic law is the science of the periodic tables. The basic idea is that the elements are not just a random selection of chemicals that have been found but are related to each other in specific ways. The basic structure for Modern Periodic Law came from Dmitri Mendeleev. Dmitri Mendeleev

Definition of the modern periodic law This modern law explains how the set of physicochemical properties of elements is a function of periodic atomic numbers. The atomic mass represents the mass contained in the total number of protons and neutrons in an atom. The atomic number represents the number of positive particles, i.e. protons, in

Henry Moseley, a young English physicist, revolutionised the periodic table of the elements and helped solve a number of chemistry and physics mysteries just over a century ago. Moseley volunteered for service in World War I just a year after he released this book and was killed in action by a sniper’s bullet. Despite his

The inner transition elements are those where the final electron enters the f-orbital. They are generally classified as group 3 elements in the periodic table, but are referred to separately as f block elements. Inner transition elements are what these f block elements are called. There are two distinct sequences of internal transition elements- Lanthanide

Any chemical substance that contains an oxygen atom or atoms is an oxide. Metals have very good electrical and thermal conductivities. In addition to their exceptional electrical, thermal conductivity, and reflectance of light, metals are also malleable and ductile. Metal halides, metal oxides, metal sulphides, etc., are all examples of compounds that can be formed

Metals are elements that make up more than half of the periodic table’s elements. Metals have the ability to conduct heat and electricity, are malleable and ductile, and can contain a large amount of substance. These are lustrous, tough and fusible. Metals include gold, silver, copper, iron and aluminium, to name a few. To produce positive

Mendeleev Periodic Table:-  Dmitri Ivanovich Mendeleev, a Russian scientist, was the most essential contributor to the early development of the periodic table. There have been several periodic tables developed, but the Mendeleev periodic table is the most important. Following the rejection of Newlands Octave Law in 1869, the Mendeleev Periodic Table was developed. Elements were

Mendeleev Periodic Table – As we all know, our periodic table contains 118 elements. 94 of these 118 elements are natural, while 24 are synthetic. Only 30 elements were known in 1800. With the discovery of new elements, scientists found it difficult to memorise the elements and their properties. They began collecting data on the

Manganese, with the chemical symbol Mn and atomic number 25, is a solid element. It comes in a variety of forms. It is necessary to collect manganese from outside sources because it is not present naturally, but rather in minerals like pyrolusite, in nature (MnO2). Chlorine was created in the 18th  century by Carl Wilhelm