Nihonium (Nh)

Ununtrium (or Nihonium – Nh) is a radioactive chemical element with the atomic number 113 in the periodic table. There is insufficient evidence of the chemical properties of this synthetically produced substance classified in the boron family of the periodic table.  Since there are only a few atoms produced, this extremely radioactive and rapidly decaying … Read more

List of Noble Gas Elements

Group of element – Noble Gas Name Symbol Atomic Number Atomic weigth Helium He 2 4.002602 Neon Ne 10 20.1797 Argon Ar 18 39.948 Krypton Kr 36 83.8 Xenon Xe 54 131.29 Radon Rn 86 -222.0176