Atomic and molecular masses

Electron Gain Enthalpy

What Is Ionisation Energy? Ionisation energy is a quantity that represents the amount of energy that is needed for an isolated gaseous atom to lose an electron while in a ground state. The loss of electrons results in particles called cations. For an A atom to become the A+ ion, a certain energy is required […]

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

Electrical and Magnetic Properties

Electrical and magnetic properties of solids Introduction The magnetic dipoles in solids are responsible for the magnetic properties of solids in chemistry, commonly referred to as magnetism. In magnetic materials, the magnetic dipole moment is created by electrons spinning in their axis and orbital motion around the atom’s nucleus. Solids have magnetic properties due to

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

Difference Between sp, sp2, and sp3 Hybridisation

In a nutshell, this is a process in which two types of orbitals (i.e., s and p) of a common atom are combined to form entirely new orbitals of equal energies in a shell. The new orbitals are referred to as hybrid orbits, though it is called hybridisation. After hybridisation, the atom changes its physical

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

Determination of Equivalent Eight of Substances

Equivalent weight is derived from the molecular masses of compounds. Molar mass and n- factor of the substance play an important role in determining equivalent weight of  substance. The mass of a substance which displaces or combines (by weight) a certain amount of other substance is called equivalent weight. Equivalent weight is derived from the

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

Density

Litre elements and compounds have their unique densities associated with them. The density of a matter is one of its physical characteristics. In simpler words, the ‘heaviness’ of objects with a constant volume can be said to be a qualitative measurement of the density of that object. So it can be said that the compactness

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

De Broglie Waves

The de Broglie waves or matter waves refer to the properties of matter that vary in time or space while showing a wave-like behaviour. They are named after the French physicist Louis de Broglie. In 1924, for the first time, Louis de Broglie proposed the wave-like nature of the electron and said that all matter

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

De Broglie Equation and Wavelength

De Broglie’s hypothesis is one of the most fundamental theories that give a direction to quantum mechanics from classical physics. It describes the dual nature of matter, i.e., matter can behave like both particles and waves. The phenomenon of a beam of light with diffraction, just like a wave, is explained by this theory. In

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

Dalton’s Atomic Theory

John Dalton FRS was an English chemist, physicist and meteorologist. He is known for introducing the atomic theory.  The law of conservation of mass and the law of definite proportions, according to Dalton, might be explained using the concept of atoms. All matter, he suggested, is made up of small indivisible particles known as Atoms,

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

Concept of Atomic Orbitals as One-Electron Wave Functions

The wave-like nature of subatomic particles was a great debate over the years, and it was put to an end by the physicist Erwin Schrodinger. He gave a mathematical equation to identify the wave nature of subatomic particles and introduced a new subject of wave mechanics where the energy of atomic orbitals could be studied.

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry

Concept of Atom, Molecule, Element and Compound

Atoms are the fundamental building pieces of everything you see around you, including the screen you’re currently viewing, your study table, and your books. Such is nature’s incredible strength and the underlying character of these particles. Despite the salient features of Dalton’s Atomic Theory, the discovery of subatomic particles such as electrons, protons, and neutrons,

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Atomic and molecular masses, Chemistry, Class 11, IIT JEE, Some Basic Concepts in Chemistry