Class 12

In chemistry, the periodic table of elements represents a significant milestone. It is regarded as one of the most significant scientific accomplishments. Individually studying the chemistry of more than a hundred elements and their associated compounds is tough. Nevertheless, chemists such as Johann Wolfgang Döbereiner, John Newlands, Dmitri Mendeleev, and Henry Moseley thought about correct

Graphite, commonly known as plumbago or black lead, is a carbon-based mineral. It is a naturally occurring, form of carbon with a hexagonal structure system. Graphite name is derived from the Greek word “graphein,” the meaning of which is “to write.” Graphite is present in igneous and metamorphic rocks. It is of greyish-black colour, which

Introduction One method of grouping elements is to use element blocks, which are also known as element families in some circles. Element blocks differ from periods and groups in that they were formed on the basis of a completely different approach of categorising atoms than periods and groups. An element block is a collection of

The periodic table is a systematic tabular arrangement of all the chemical elements. It is a graphic representation of the law, which claims that the properties of chemical elements are related to their atomic numbers in a predictable manner. The periodic law states that “The physical and chemical properties of the elements are periodic functions

Boron is a chemical element found in group 13 of the periodic table, and is essential for the growth of plants. It is also widely used in industries. It is pure crystalline in nature, and is a lustrous black semiconductor, which means it acts like a metal at extremely high temperatures and an insulator if

A travelling wave, also known as a progressive wave, is a wave that travels constantly in the same direction without changing its amplitude. Traveling waves are another name for progressive waves. It continues to unveil itself. A progressive wave is defined by its ability to travel indefinitely without stopping or changing in amplitude or direction.

The popularity of the modern periodic table comes from it being an easy-to-use reference. This table has simplified the study of chemistry. By memorizing the periodic table of elements, you can trace their physical and chemical properties. Predictions regarding the compounds formed by an element are determined based on its position in the table. Present

We know that the periodic table has 18 groups and seven periods, and each group has some physical and chemical properties. Physical properties are not concerned with the chemical composition or change in the chemical composition of an element. However, physical properties deal with other characteristics such as density, colour, hardness, melting point and boiling

Alkali metals are volatile, with an outermost shell containing only one electron. The term “alkali” generally refers to the metal hydroxides’ basic or alkaline character. The compounds are called alkali metals because they typically react with water to form alkalis, which are strong bases capable of neutralising acids. The alkali metals are the best example