Atomic structure-electrons and nuclei, Chemistry

Assignment Help:

 

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.

 


Related Discussions:- Atomic structure-electrons and nuclei

Tri hydric alcohol, Physical properties of tri hydric alcohol

Physical properties of tri hydric alcohol

Atom, if the electon in hydrogen atom is exited to n=5 the number of diffre...

if the electon in hydrogen atom is exited to n=5 the number of diffrent frequency of radiations which may be exited is

What are the various types of electrodes?, Some important types of electrod...

Some important types of electrodes which are frequently used in electrochemical cells are described as follows:     Metal-metal ion electrode: such type of electrodes includes a

Hormones are chemical messengers explain, a. 'Hormones are chemical messeng...

a. 'Hormones are chemical messengers.' Explain? b. Name the main disease caused due to lack of the vitamin and its source in each of the following: A, B 6 and E.

Explain cmr spectrum, Explain CMR spectrum 2,2-Dimethyl-1-propanamine (...

Explain CMR spectrum 2,2-Dimethyl-1-propanamine (neopentylamine, (CH 3 ) 3 CCH 2 NH 2 ) has a maximum of three resonances in its CMR spectrum.  2-Methyl-2-butanamine, CH 3 CH 2

Calculate the value for the standard molar reaction entropy, Calculate the ...

Calculate the Value for the Standard Molar Reaction Entropy? Derive an expression for the standard molar reaction entropy of a reaction that can be used to calculate its

Spectrometry, a sophisticated ultra/visible/near-IR instrument has a wavele...

a sophisticated ultra/visible/near-IR instrument has a wavelenght range of 185 TO 3000 nm.What are its Wave number and frequency ranges ?

Scientific and Ordinary Notation, How is 7.979 times 10 to the 4th in scien...

How is 7.979 times 10 to the 4th in scientific notation for the ordinary notation: 7979?

Calculate the number of photons per second, What is the percentage of light...

What is the percentage of light that is engaged by the sample after a path length of 1 µm? Calculate the number of photons per second absorbed by the sample.   T

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd