Proton-neutron hypothesis, Physics, Basic Statistics

This hypothesis was put forward by Heinsberg after the discovery by Chadwick.

According to this hypothesis, a nucleus of mass number A and atomic number Z contains Z protons, and (A – Z) neutrons. As an atom is electrically neutral, therefore, number of peripheral electrons must be equal to Z, the number of protons inside the nucleus.

This hypothesis explained all the discrepancies of proton electron hypothesis.

As is known, a neutron is a neutral particle carrying no charge. A proton carries a unit positive charge. Proton is slightly lighter than a neutron.

A proton and a neutron may be regarded as two different charge states of the same particle, called nucleon.

As the atom is electrically neutral, number of electrons in an atom is equal to the number of protons inside the nucleus.

Atomic number of an element is the number of protons present inside the nucleus of an atom of the element. It is also equal to the number of electrons revolving in various orbits around the nucleus of the atom. It is represented by Z.

Mass number of an element is the total number of protons and neutrons present inside the atomic nucleus of the element. It is represented by A.

Thus, in an atom, number of protons = Z

Number of electrons = Z

Number of nucleons = A

Number of neutrons = (A – Z)
Posted Date: 1/31/2012 11:09:58 PM | Location : United States







Related Discussions:- Proton-neutron hypothesis, Physics, Assignment Help, Ask Question on Proton-neutron hypothesis, Physics, Get Answer, Expert's Help, Proton-neutron hypothesis, Physics Discussions

Write discussion on Proton-neutron hypothesis, Physics
Your posts are moderated
Related Questions
Capital grants Grants that are restricted for the acquisition: structure: renewal of capital assets associated with an accurate program, Refer to GRANTS & OPERATING GRANTS

The National Marine Fisheries Services is part of the National Oceanic and Atmospheric Administration. NMFS's programs support the conservation and management of living marine reso

discuss the nature and causes of the components of an economic time series?

Use of Assets A potential upcoming financial advantage acquired or managed by a particular business due to past purchases or activities. These financial options can be concrete or

Definition of business valuation to determine the stock price of an entity. Business valuation is the value or price where a unit would be purchased at a given point in time. Usual

why are revenues an important number in financial statements?

mr.sunil join as a new business partner and borrowed rs. 850000 from ansul investment co. and depoisted the money into a uti bank account on 1-4-2006.

A. Complete the correlation matrix table. B. Which variable (s) has the highest correlation coeffieient which is not a perfect correlation? C. Which variable (s) has the lowest cor

Find the value of E (i+). Show your calculation. i=7 i=3

A researcher working for a drug company is interested in investigating the effect of storage on the potency of one of the company's drugs. 10 freshly produced bottles of the drug a