and the sum of the protons and neutrons gives the atomic mass, the number of neutrons defines the isotope of that element. For example, most carbon (≈ 99 %) has 6 protons and 6 neutrons and is written ...

Key fact: isotopes are forms of an element ... Helium ion, two neutrons, two protons and three electrons. Nuclear fission close nuclear fissionThe splitting of a large nucleus to produce two ...

The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and ...

The different types of chlorine are called isotopes of chlorine ... 34 Since this is a nucleus there are no electrons There are 30 protons and 34 neutrons. \(_{92}^{238}\textrm{U}\) ...

The electrons circulate around the ... which is what happens to radioactive isotopes. Helium, with two protons and two neutrons, is the lightest “doubly magic” nucleus. Both its neutron ...

Visualization of the evolution of the nuclear size and shape from indium and tin isotopes between the major nuclear shells at N=50 and N=82, where N is the number of neutrons in the nucleus.