Рефераты | Топики по английскому языку | Model of atom’s nucleus and table of elements Model of atom’s nucleus and table of elements Категория реферата: Топики по английскому языку Теги реферата: изложение 4, реферат ?аза?ша Добавил(а) на сайт: Feofanija. Предыдущая страница реферата | 1  2  3  4  5  6  7  8  9 99

Cm 100

Bk 101

Cf 102

Es 103

Fm 104

Md 105

No 106

Lr 107

In 1891 James Chardwik carried out researches and with the help of Rezerford’s formula rated nucleuses charges for platinum-77,4 ; silver-46,3 ; copper-29,3 . These results almost coincided with ordinal numbers of these elements in the periodic table .

But the last lanthanide are radioactive ! According to our model of atom’s nucleus radioactivity of the subsequent after lanthanide elements can be reduced , by bringing a shell inside the nucleus which consists of 4 protons or 4 alpha-elements.

But then defining the nucleuses charge of platinum’s atom on Chardwik’s method , we would get again 77,4 ; because alpha-elements would disperse on the nucleus’s external shell of an atom .

That’s why the question of more precise definition of nucleus charges of elements following the Hf , is raised .

This is probably the reason of the failure to get to the “ island of stability “ and seditious idea comes to the mine we build atomic electric power stations without knowing the definite amount of neutrons and protons in the nucleuses of uranium and plutonium .

Список литературы

Hehadzi Filipenka “Engineer” Moscow N4 1990 , N4 1991.

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