The number of protons in the nucleus of an element’s atom is known as the element’s atomic number. The table makes it easy to find basic information about every element, including its atomic weight, electron configuration, and reactivity. History of the Periodic Table The periodic table did...
Neon emits a number of very strong orange-red lines that overwhelm the color of the specific element. In a spectrometer this is no problem because you just use a prism or diffraction grating to separate the light into a spectrum, then block out the neon lines. But it does mean that they...
In early 2004 Max Whitby and I started selling individual element samples identical or similar to the samples we use in the museum displays we build. These are top-quality samples presented in attractive forms appropriate to the particular element. They are for sale from Max's website and also...
ofisotopesof every element—atoms with the same atomic number but different atomic weights. The chemical properties of the isotopes of an element are essentially the same, and all the isotopes of an element occupy the same place in the periodic system in spite of their differences in atomic ...
Periodic Table Curious Facts The Most Expensive Element Lutetium is a metal and the most expensive chemical element available. The price of 1 gram is $100. Francium, however, is the most expensive element that can be produced. A small amount will cost a few billion. ...
Periodic Table Curious Facts The Most Expensive Element Lutetium is a metal and the most expensive chemical element available. The price of 1 gram is $100. Francium, however, is the most expensive element that can be produced. A small amount will cost a few billion. ...
Oxygen is the element with atomic number 8 and element symbol O. Under ordinary conditions, it can exist as a pure element in the form of oxygen gas (O2) and also ozone (O3). Here is a collection of facts about this essential element. ...
periodic table, inchemistry, the organizedarrayof all thechemical elementsin order of increasingatomic number—i.e., the total number ofprotonsin the atomic nucleus. When the chemical elements are thus arranged, there is a recurring pattern called the “periodic law” in their properties, in whi...
Award winning periodic table with user-friendly element data and facts. Cool online chemistry videos, dictionary, tools, etc.
Radioactive elements like this one are represented in this particular set by a non-radioactive dummy powder, which doesn't look anything like the real element. (In this case a sample of the pure element isn't really practical anyway.) To learn more about the set you can visit my page ...