Major Funding by the Laura Moore Cunningham Foundation and the Idaho National Laboratory. Additional Funding by Sparklight, the Friends of Idaho Public Television and the Corporation for Public ...

The vast majority of the atomic mass is contributed by the protons and neutrons. For any element in the periodic table, the number of electrons in an atom of that element always equals the number of ...

Atomic number 14, atomic weight 28.086. Nickel (Ni): Nickel is a hard, metallic element that found in igneous rocks. Without nickel, stainless steel would be less resistant to heat and corrosion.

We learn the periodic table as the elements arranged according to the atomic number, which is an integer, a whole number. That's the number of protons in an atom of that element.

Pekka Pyykkö proposes a periodic table that goes all the way up to atomic number 172 and is based on electronic configurations, which he calculated by taking relativistic effects into account.

The classic Periodic Table organizes the chemical elements according to the number of protons that each has in its atomic nucleus. (Image credit: Karl Tate, Livescience.com contributor) ...

Ask a friend to give you any number less than 1200 and then recite π starting at that decimal digit. For instance, if he says 314, you read the gallium (no. 31) mouthful from its fourth digit ...

Generally for the elements after uranium, the further along they are on the periodic table — the higher their atomic number — the less time they last. Half-lives of unstable elements vary by ...

The new element doesn't have an official name yet, so scientists are calling it ununpentium, based on the Latin and Greek words for its atomic number, 115. (Related: Read a feature on element ...

News Published: 01 June 1926 The Element of Atomic Number 61; Illinium J. A. HARRIS, L. F. YNTEMA & B. S. HOPKINS Nature 117, 792–793 (1926) Cite this article ...