Whether you commit to the full weekend or just one day, either way, you do not want to miss out on the epic glory of this stellar line-up. Check out our coverage of Rock the Lake 2016, to see what those of you have tickets are in for.
Part 3. Survey of Period 1: hydrogen H to helium He. Period 1, the shortest period of the periodic table, only consists of two elements, hydrogen and helium. Although the properties of helium match those of the other Noble Gases, hydrogen does not really fit into any group. A brief summary of their properties is given below.
Hydrogen is unique in that it has three isotopes which are named. Deuterium is one of the isotopes of hydrogen. It has one proton and one neutron. The most common isotope of hydrogen is protium, which has one proton and no neutrons.Because deuterium contains a neutron, it is more massive or heavier than protium, so it is sometimes called heavy hydrogen.By Anne Marie Helmenstine, Ph.D. Deuterium is a stable isotope of hydrogen. 2  The natural abundance of deuterium in the ocean is approximately 156.25 ppm, which is one atom in 6,400 of hydrogen. 3  The name for deuterium comes from the Greek word deuteros, which means second.