Click here to buy a book photographic periodic table poster card deck or 3D print based on the images you see here. 30 Zn Zinc 6538. Copper Symbol Element Number 29 Of The Periodic Table Of The Elements Chemistry Green Squar Element Chemistry Copper Symbol Periodic Table Of The Elements In other words in every 100 chlorine atoms 75 atoms have a mass number of 35 and 25 atoms have a mass number of 37. . 43 Tc Technetium 97 44 Ru Ruthenium. Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structureThe chemical symbol for Hydrogen is H. Atomic mass of Copper is 63546 u. 32 Ge Germanium 72630. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. Its monatomic form H is the most abundant chemical substance in the Universe constituting. Atomic Mass of Copper. The atomic mass i...