Isotopes

This video tutorial explores the structure of atoms, focusing on isotopes. It explains that isotopes are variations of elements with the same number of protons but different numbers of neutrons, leading to different mass numbers. The video discusses why mass numbers in the periodic table are not whole numbers, due to the weighted average of isotopes. It also introduces radioisotopes, which are unstable and emit nuclear radiation. The tutorial encourages viewers to understand isotopes and their relation to the periodic table.

What is the significance of the atomic or proton number in an atom?

Describe what radioisotopes are and their characteristics.