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What is an Atom ?

What is an Atom ? Atom Definition An atom is defined as the smallest unit of matter that retains the properties of an element. Nucleus Composition The nucleus contains protons and neutrons and is the core where most of an atom’s mass is concentrated. Proton Protons are positively charged particles.

By Encyclopedia 07/26, 2024
Engineering Materials

Fermi Dirac Distribution Function

Distribution functions are nothing but the probability density functions used to describe the probability with which a particular particle can occupy a particular energy level. When we speak of Fermi-Dirac distribution function , we are particularly interested in knowing the chance by which we can f

By Electrical4u 03/14, 2024
Engineering Materials

Energy Bands in Crystals

As per Neil Bohr’s theory of atomic structure, all the atoms are found to have discrete energy levels around their central nucleus (more on this can be found in the article “ Atomic Energy Levels ”). Now consider the case wherein two or more such atoms are placed nearer to one another. In this case,

By Electrical4u 03/14, 2024
Engineering Materials

Quantum Numbers

The quantum numbers are basically represents the address of an electrons in atom. These quantum numbers represent the location, energy level and spin of electron in atom. These quantum numbers are useful for representing the electron configuration. Quantum numbers are of four types – Principal quant

By Electrical4u 03/14, 2024
Engineering Materials

Atomic Energy Levels

Atoms constitute the building blocks of all materials in existence. In these atoms, there is a central portion called nucleus (N in Figure 1) which consists of protons and neutrons, around which revolves the particles called electrons. Next, it is to be noted that all the electrons constituting the

By Electrical4u 03/14, 2024
Engineering Materials

What is an Atom?

An atom is defined as the smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule. In the year 1808, famous English chemist, physicist, and meteorologist John Dalton published his theory of the atom . At that time, many unexplained chemical phenom

By Electrical4u 03/14, 2024
Engineering Materials

Bohrs Atomic Model

It is introduced by Danish Physicist Niels Bohr in the year of 1913. According to this model the atom consists of small nucleus at the center and electrons which rotates in circular orbits surrounding the nucleus – similar to solar system . But here, the force of attraction is provided by electrosta

By Electrical4u 03/14, 2024
Engineering Materials

Rutherford Atomic Model

We all have seen plums in padding. Previously it was thought that electrons in an atom are distributed on positive charge just like plums in a pudding. In other words, it was thought that positive charge exists throughout the atom and negative electrons are unevenly distributed on it just like plums

By Electrical4u 03/14, 2024
Engineering Materials

How to Understand the Electronic Configuration of Atoms

he electronic configuration of an atom is a way of describing how its electrons are arranged in different energy levels and sublevels around the nucleus. The electronic configuration of an atom determines many of its physical and chemical properties, such as how it reacts with other atoms , how it c

By Electrical4u 03/14, 2024
Engineering Materials

The Plum Pudding Model: An Early Attempt to Explain the Atom

What is the Plum Pudding Model? A plum pudding model is a historical scientific model of the atom that was proposed by J.J. Thomson in 1904, shortly after he discovered the electron. The model tried to explain two properties of atoms that were known at that time: electrons are negatively charged par

By Electrical4u 03/14, 2024

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What is an Atom ?

Fermi Dirac Distribution Function

Energy Bands in Crystals

Quantum Numbers

Atomic Energy Levels

What is an Atom?

Bohrs Atomic Model

Rutherford Atomic Model

How to Understand the Electronic Configuration of Atoms

The Plum Pudding Model: An Early Attempt to Explain the Atom

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