To provide you with additional information about how we collect and use your personal data, we’ve recently updated our Privacy Policy and Terms of Service. Please review these pages now, as they apply to your continued use of our website.
An image of the first three elements from the Periodic Table: Hydrogen, Helium and Lithium. Each element is 3 MP in dimension. Using hydrogen as an example: Number 1 represents the number of protons one hydrogen atom has and 1.0079 is its atomic mass. Unique fact: a hydrogen atom has only one electron - hence it is an extremely unstable element.