Atomic structure-electrons and nuclei, Chemistry

 

Electrons and nuclei

 The familiar planetary model of the atom was proposed by Rutherford in 1912 following experiments by Geiger and Marsden showing that all the mass of an atom was concentrated in a positively charged nucleus. Negatively charged electrons are attracted to the nucleus by the electrostatic force and were considered by Rutherford to 'orbit' it in a same way to the planets round the Sun. It was realized that a proper description of atoms required the quantum theory; although the planetary model remains a useful analogy from the macroscopic world, many of the physical ideas that work for familiar objects must be abandoned or modified at the microscopic atomic level.

 

Posted Date: 7/21/2012 7:16:11 AM | Location : United States







Related Discussions:- Atomic structure-electrons and nuclei, Assignment Help, Ask Question on Atomic structure-electrons and nuclei, Get Answer, Expert's Help, Atomic structure-electrons and nuclei Discussions

Write discussion on Atomic structure-electrons and nuclei
Your posts are moderated
Related Questions
Highest melting point would be of: (1) He        (2) CsCl      (3)  NH 3   (4)  CHCl 3 Ans:  CsCl

Rubber - polymer It is a polymer that is able of returning to its original size, shape or length later than being deformed or stretched. It a kind of elastomer. Rubber is of tw

DEGREE OF HARDNESS:   The degree of hardness of water is conveniently expressed in terms of equivalent amount of CaCO 3 . Although hardness of water is never present in th

Discuss "cohesive energy" and "electron affinity". ‘Cohesive energy’:  In a chemical bond, it’s the energy required to dissociate a solid into isolated atoms or molecules as ap

Perfect gases are assumed to be comprised of infinitesimally small particles and to interact only at the point of collision. At intermediate pressures, the volume of the gas become

HOW WE NAMING THE BOND LINE NOTATION

which is more acidic 3 floro pentonoic acid or 3 nitro pentonoic acid

determination of lattice energy

copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula

Describe why shielding is more effective by electrons in a shell of lower principle quantum number than by electrons having the similar principle quantum number.