more than one nucleus

Rutherford and his co-workers, performed series of scattering experiments and concluded that the entire mass and the positive charge is concentrated in a very small region at the centre of the atom, known as nucleus. The radius of the nucleus is about 10 - 1 5 ..

Rutherford and his co-workers, performed series of scattering experiments and concluded that the entire mass and the positive charge is concentrated in a very small region at the centre of the atom, known as nucleus. The radius of the nucleus is about 10 - 1 5 m i.e., ..

It is the central core of the atom where the entire +ve charge and mass is concentrated. It is a tiny sphere of diameter ranging from 10 - 1 5 m to 10 - 1 4 m. A nucleus is made up of particles called neutrons and protons. A neutron does not carry any charge wh..

Why electron cannot exist in the nucleus? - On the basis of Heisenberg's uncertainty principle, it can be shown as to why electron cannot exist within the atomic nucleus. The radius of the atomic nucleus is of the order of 10 - 1 5 m. Now, if the electron wer..

Ernest Rutherford, an energetic New Zealander working in England, was studying the properties of particles spontaneously emitted by radioactive substances. Of particular interest was a positively charged, relatively heavy emission named alpha particle. Quantities of such particles are emitted by c..

Atoms and Nuclei..

What is the distance of closest approach to the nucleus of an alpha particle which undergoes scattering by 180 o in the Gelger- Marsden experimen..

The b - particles are electrons - 1 e 0 with mass number zero and charge equal to -1. Since nucleus does not contain electrons, the emission of b - particle from a radioactive nucleus is believed to arise from the conversion of a neutron into proton and elect..

When a nucleus emits an a - particle its atomic number isreduced by two units and its mass number is reduced by four units. The daughter element, thus formed occupies a position in the periodic table two places left of the parent element. For e.g., the emission of a - particle from produc..

- particles. By emission of a b - particle, atomic number of nucleus increases by one whereas mass number remains same. (this is because, the ejection of a b - particle results from the transformation of a neutron into a proton and an electron ..