Briefly Explanation of Atomic Structure

[1] Works Related with Scientists

Discovery

Discovered By

Electron

Proton

Neutron

Nucleus

Atom

Cathode rays

Anode rays

Positron

Meson

Neutrino

Antiproton

Atomic no.

J.J. Thomson

Goldstein

Chadwick

Rutherford

Dalton

William crooks

Goldstein

C.D. Anderson

Yukawa

Pauling

Segre

Moseley

[2] Nature of Atom

For neutrals atom

1. Z=P=e
2. A=P+n
3. A=Z+n
4. A=e+n

where,
Z=atomic number
A=atomic weight
P=proton
e=electron
n=nutron

Isotop

Isobar

P=Same

n=Different

A=Same

P=Different

Isoelectronic

Isodiaphere

electric charge same of two-atom(n-p)=Same

Z,n,A=Different

Isotone

n=Same

P=Different

[3] Some formula Related with Bohr Model

The Bohr model is a relatively primitive model of the hydrogen atom, compared to the valence shell atom. As a theory, it can be derived as a first-order approximation of the hydrogen atom using the broader and much more accurate quantum mechanics and thus may be considered to be an obsolete scientific theory. However, because of its simplicity, and its correct results for selected systems (see below for application), the Bohr model is still commonly taught to introduce students to quantum mechanics or energy level diagrams before moving on to the more accurate, but more complex, valence shell atom. A related model was originally proposed by Arthur Erich Haas in 1910 but was rejected. The quantum theory of the period between Planck’s discovery of the quantum (1900) and the advent of a full-blown quantum mechanics (1925) is often referred to as the old quantum theory.wikipedia

reference By Wikipedia

v = 1/λ = RZ2 [1/n2i – 1/n2f]

Total No. of Spectrum lines = n(n-1)/2

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