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.

In 1919 Rutherford had discovered the proton, a positively charged particle within the atom's nucleus ... He called it a neutron, and imagined it as a paired proton and electron.

A helium atom that has lost or gained an electron is an ion. The ion has two positive protons but one electron so it is a positive ion. Helium ion, two neutrons, two protons and three electrons.

When a carbon-14 atom decays, one of its eight neutrons turns into a proton, emitting an electron (with a charge of -1) in the process. The atom is now stable. And with seven protons and seven ...

The size of an atom is only a few angstroms at most - there are 10 billion angstroms in 1 meter. This video also goes the ...

We know that matter is made up of particles called atoms and that an element is a substance that is made up of only one kind of atom ... electron is very small compared to a proton or a neutron.

Quarks are the reason protons have a positive charge. Each quark has a fraction of an electric charge. A proton has two up ...

neutrons and electrons. For example, a hydrogen atom has one proton, one electron and zero neutrons, while uranium has 92 ...