Atomic structure - AQA Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The numbers of subatomic particles in an atom can be calculated from its ...

Atomic structure - AQA Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The number of subatomic particles in an atom can be calculated from the atom's ...

That’s evident in his work-space, which looks like a woodshop and is home to his 2009 piece “Fat Man," a to-scale replica in black-lacquered hardwood of the atomic bomb dropped on Nagasaki in ...

Countries around the world maintain precise atomic clocks to keep time standards consistent. An atomic clock operates on the principle of electrons in an atomic shell vibrating at a constant rate.