The Periodic Table is a well-organized chart that contains all 118 known elements in the universe. These elements are the ...

Particle-accelerator study focuses on the r-process thought to be responsible for forming elements heavier than iron ...

according to increasing atomic number. Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also ...

The atomic number is shown below the chemical symbol, and the mass number is shown above. In this example the atomic number is 17 and the mass number is 35. This means that each of these atoms has: ...

For example, the atomic number of sodium is 11. Every sodium atom has 11 protons and 11 electrons. It has 11 positive charges and 11 negative charges. The mass number of an atom is its total ...

Atomic Theory and Mechanics,œ published In this periodical (NATURE, 116, 809; 1925). The rapid development which has taken place since has given rise to a considerable number of publications.

Fission splits a heavy element (with a high atomic mass number) into fragments; while fusion joins two light elements (with ... Fusion on the other hand does not create any long-lived radioactive ...