Chem Vocab

The neutral particles nestled in an atom's nucleus, they are essential for maintaining stability alongside protons. They help hold the nucleus together through the strong nuclear force.

The group of elements found in Group 18 of the periodic table. These gases are known for their stable and unreactive nature due to having a full outer electron shell. They are often used in lighting, welding, and as inert atmospheres.

An element that undergoes radioactive decay, leading to the emission of particles or energy until it reaches a stable configuration. These elements have unstable nuclei due to an imbalance of protons and neutrons, making them prone to transformation into more stable isotopes.

The central core of an atom that houses protons and neutrons. It holds most of the atom's mass and positive charge. The electrons whizz it.