quantum theory of atomic structure

In view of new discoveries about atoms, Dalton's atomic theory was modified as given below: Atom is no longer indivisible as it has a complex structure of sub atomic particles (electrons, protons and neutrons). Atoms of the same ..

Introduction - The evidence of the electrical nature of matter preceeded the first theories about the structure of matter. In 1832, Michael Faraday discovered electrolysis. He gave the first important clue relating electricity to matter and about the electric nature of atom..

This quantum number determines the main energy level or shell in which an electron is present. It is usually denoted by n and can have any whole number value such as: n = 1, 2, 3, 4 .. etc. The various values of n as 1, 2, 3, 4 .etc., are also called K, L, M, N etc. If n = 1, the energy l..

, +1 or p-subshell contains three orbitals called p- orbitals. If l=2, m may be -2, -1, 0, +1, +2 or d-subshell contains five orbitals called d-orbitals. Similarly, it can be shown that f-subshell can have seven orbitals. The number of orbitals in a subshells are given belo..

Structure of the Atom - The Structure of the Atom Scientific investigation on the structure of atom and its subatomic particles is an area where still absorbs scientists. In the process, they have discovered many more new subatomic particl..

Scientific investigation on the structure of atom and its subatomic particles is an area where still absorbs scientist..

Atomic Number, Mass Number or Nucleon Number - The nuclei of atoms are made up of protons and neutrons. These two components of the nucleus are referred to as nucleons. The electrons occupy the space outside the nucleus. Since an atom is electrically neutral, the numbe..

A story unfolds - Structure of atom : Let us right away meet those who scripted a "mighty story" of a "miniscule" atom. John Dalton (1766 - 1844) : Born in a poor family of a weaver in England, he rose to become a teacher and later a Principal of a schoo..

Everything that exists in our universe is made up of this tiny particle called atom. The computer you are working on is made up of atoms..

Arrangement of Electrons in an Atom (Bohr-Bury Scheme) - Electrons revolve around the nucleus in different energy levels or shells and each shell is associated with definite energy. The energy of the K shell is the least while those of L, M, N and O shells increases progressively. We also..