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  1. ptable.comPeriodic Table - Ptable

    Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.

    • Questions

      Type the CAS number or name of a compound to find all...

    • Contact

      It's supposed to be atomic mass, not weight. Atomic weight...

  2. ptable.com › print › periodic-tablePERIODIC TABLE OF ELEMENTS

    For a fully interactive version with orbitals, isotopes, compounds, and free printouts, visit http://www.ptable.com/.

  3. sciencenotes.org › printable-periodic-tableFree Printable Periodic Tables (PDF and PNG)

    This chart contains all the information you could want from a printable periodic table, including element symbols, names, atomic numbers, atomic masses, electron shells, periods, groups, state of matter, and more.

  4. pubchem.ncbi.nlm.nih.gov › periodic-tablePeriodic Table of Elements - PubChem

    Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!

  5. iupac.qmul.ac.uk › AtWtATOMIC WEIGHTS OF THE ELEMENTS 2021 - Queen Mary University of...

    See below for the elements listed in Atomic Number Order or Name order. See also a copy of the periodic table with atomic weights to five significant figures. Table 1. List of Elements with Range of Atomic Weights. At No. Symbol. Name. Minimum Atomic Wt. Maximum Atomic Wt.

  6. www.periodic-table.org › Hydrogen-periodic-tableHydrogen - Periodic Table

    21 lis 2020 · Neutron Number and Mass Number of Hydrogen. Mass numbers of typical isotopes of Hydrogen are 1; 2. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. Neutron number plus atomic number equals atomic mass number: N+Z=A.

  7. iupac.org › wp-content › uploadsIUPAC Periodic Table of the Elements

    hydrogen 1.008 [1.0078, 1.0082] 1 18 3 Li lithium 6.94 [6.938, 6.997] 4 Be beryllium 9.0122 11 Na sodium 22.990 12 Mg magnesium 24.305 [24.304, 24.307] 19 K potassium 39.098 20 Ca calcium 40.078(4) 37 Rb rubidium 85.468 38 Sr strontium 87.62 55 Cs caesium 132.91 56 Ba barium 137.33 87 Fr francium 88 Ra radium 5 B boron 10.81 [10.806, 10.821] 13 ...