Class 12

Allotropes of Hydrogen

The lightest substance in the universe is Hydrogen. In the periodic table, this is the first element. It also has similarities to alkali metals and halogens. However, scientists have discovered Hydrogen in a metallic state in recent studies and experiments. Like other alkali metals, it contains one electron in its valence shell and produces the […]

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Chemistry, Class 12, Hydrogen, IIT JEE, Properties of H2

Structure, Properties and Uses of Allotropes and Oxides of Carbon

Allotropes of Carbon Introduction Allotropes are  elements that exist in  more than one form but are in the same physical state. The Carbon  the sulfur are  two common chemical compound having allotropes. Due to the carbon having valence, carbon can form many allotropes. The known forms of carbon are graphite and diamond. Carbon is a

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

Relative Permittivity of a Material

Relative permittivity is the property of a particular dielectric material that determines what static energy can be stored per unit volume of the dielectric material per unit voltage applied to it, and it’s of great importance for capacitors and capacitance calculations. Permittivity is denoted within equations using the symbol ε (epsilon). It measures the electric

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

Physical Properties of Non-Metals

Non-metals are substances that do not possess any of the characteristics of metals. They are excellent insulators of both heat and electric current. They are largely gases, with some liquids thrown in for good measure. Some of them, such as carbon, sulphur, and phosphorus, are even solid at normal room temperatures. Physicochemical Characteristics of Nonmetals

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

Nuclear Chemistry and Radioactivity

Radiation Radiation is energy that is generated from a source and travels through space at the speed of light. This energy has both electric and magnetic fields linked with it, and also has wave-like properties. Radiation can also be called  “electromagnetic waves”. There are four major types of radiation: alpha, beta, neutrons, and electromagnetic waves such as

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

Non-Metals

In chemistry, a nonmetal is a chemical element that does not have a predominance of metallic qualities. Nonmetals can range from colorless vapors to glossy and refractory (high melting point) solids, and from poor to excellent conductors of heat and electricity, depending on their composition. Solid nonmetals are fragile to crumbly, cannot be easily flattened

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

Nomenclature of Ethers

Ethers are an organic chemical class or group, with just an ether group consisting of an oxygen atom linked either to 2 aryl or alkyl groups. Ethers have the general formula “R-O-R′, Ar-O-Ar, or R-O-Ar, “where R and R′ symbolize either aryl or alkyl groups. Ethers have a structure similar to alcohol, while both Ethers

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

Anomalous Behaviour

An anomalous behaviour differs from the norm or original order. In terms of properties, it is distinct from the others in its group. Anomalous behaviour means anomalous elements show unique properties and produce unique compounds. Three factors cause the periodic table elements to behave anomalously. Compared to other atoms, their ions and atoms are small.

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

What is a Conduction Band

As per the observations of band theory, the distinctions between conductors, insulators, and semiconductors give a better idea of the energy and electrons that are present with a material. The conduction band is one such important concept to be covered concerning this theory. Conduction band can be defined as the band of electron orbitals that

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Chemistry, Class 12, Classification of Elements and Periodicity, Electronegativity, IIT JEE

What are Actinides?

The group of radioactive metallic elements found on the last side of the periodic table is called actinides. These elements range between atomic numbers 89 and 103 on the periodic table. Apart from Uranium and Thorium, the actinides are mostly composed of man-made elements. These elements play a crucial part in chemistry (nuclear), owing to

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Chemistry, Class 12, Classification of Elements and Periodicity, IIT JEE, Periodicity of atomic and ionic radii