Helium atom,conceptual model. Computer artwork representing the atomic structure of helium. Helium has two protons and two neutrons (large spheres) in its nucleus (faint circle,centre),with two electrons (bright dots) orbiting it. Each proton and neutron contains 3 quarks (smaller spheres): a neutron has one up quark and two down quarks,whereas a proton has two up quarks and one down quark | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Kail, Richard |
Bildgröße: | 3898 px × 4548 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |