This colorful periodic table wallpaper is a bright and cheerful way to decorate your desktop and have access to basic elemental information. This includes all 118 element's atomic number, element symbol, element name, and atomic mass.
If you live in a place that gets winter, you know (or may be) a person who steps outdoors, sniffs the airs, and declares it “smells like snow.” Others might not be keen on weather prediction, but swear the fluffy, white flakes have a distinctive aroma. Can you tell when […]
Most icebergs are white, but they occur in a wide range of colors, including blue, green, yellow, black, and striped. The colors depend on the amount of air in the ice and whether it contains any impurities. Iceberg color changes over time. Exposure to air and sunlight can erode the […]
Electronegativity is a measure of how easily an atom attracts a pair of electrons to form a chemical bond. A high electronegativity value means an atom readily attracts electrons to form a chemical bond with another atom. A low electronegativity value means an atom readily donates electrons to form a […]
Isotopes are forms of an element that have different numbers of neutrons. All isotopes of an element have the same atomic number and number of protons, but they have different atomic masses from each other. Isotopes of an element share similar chemical properties, but have different nuclear properties. Every element […]
Technetium is a radioactive element, with no stable isotopes. With an atomic number of 43, it is the lightest unstable element. All of the elements surrounding it on the periodic table have at least one stable isotope. What is it about technetium that makes it special? The short answer is […]