The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and one electron in the region outside the nucleus. The electron and proton are attracted to each other.

For example, a helium atom has an ... He called it a neutron, and imagined it as a paired proton and electron. There was no evidence for any of these ideas. Chadwick kept the problem in the ...

a proton in the lithium nucleus is resonantly excited by the interaction with the electron and promptly decays into a neutron and a positively charged pion. If this neutron subsequently transfers ...

In Bohr's model, if an electron orbit is not already filled ... It has magic numbers of 82 protons and 126 neutrons. Examples of magic numbers and stable nuclei exist everywhere—but scientists ...

For example, a helium atom has an ... He called it a neutron, and imagined it as a paired proton and electron. There was no evidence for any of these ideas. Chadwick kept the problem in the ...