Inorganic Chemistry: Fundamental Particles and Antiparticles

Niels Bohr's model of the atom proposed that electrons jump to higher orbits when excited, releasing light when they fall back to the original orbit.

According to Rutherford's model, electrons orbit the nucleus in a similar way planets orbit the sun.

Each orbit in Bohr's model can hold an unlimited number of electrons.

In the discovery of the neutron, it was found that neutrons have a mass but no charge.

Hydrogen atom contains 1 proton and 2 electrons.

The atomic mass of lithium is 5 amu.

Electrons fill orbits closest to the nucleus first according to Bohr's model.

The discovery of neutrons led to the development of the atomic model that is no longer used today.

Helium atom contains 2 protons and 2 electrons.

Fluorine has more neutrons than protons in its nucleus.