Site developed by Steve Murov, Professor Emeritus of Chemistry, Modesto Junior College,

Other Murov sites:
Chemistry Directory:
Organic Chemistry Directory:
Organic Solvent Properties and Property Directory:

I.  Traditional 
II. Vertical 
III. Toxicity (LD50 values) 
IV. Native (elemental form) 
V. Date and Country of Discovery 
VI. Formulas of Cmpds. with H and Cl 
VII. Reaction-Map of Organic Chemistry 
VIII. Internet Directory of Periodic Tables  

Dimitri Mendeleev

VIII. Directory of Periodic Tables

    A. Properties, Graphing and/or Ranking Capability

WebElements - (choose topic from right side of site)  (chart, sort option did not work on 6/4/16)

    B. Properties 
electron configurations - 
nmr - 
x-ray - 

    C. Interactive and/or Animated Periodic Tables

    D. Images of Elements 

    E. About the Periodic Table

    F. Mendeleev and the History of the Periodic Table 

    G. Emission Spectra of Elements and Electron Structure 

    F. Isotopes 

    G. Chemogenesis (chemical reactivity from the periodic table) 

    H. Tabular Compilation of Elemental Properties and Abundances 

    I. Elemental Toxicities 

    J. Sources, Uses, Functions and Mineralogy of Elements

    K. Native Elements 

    L. Periodic Table Videos 

    M. Extended Periodic Table

    N. Vertical Periodic Table

    O. Periodic Table Printmaking Projects  

    P. Periodic Table of Comic Books

    Q. The Element Song by Tom Lehrer  

    R. Periodic Table Templates

    S. Directories of Periodic Tables 


Questions about the periodic Tables

1. Suggest reasons for the predominance of the horizontal periodic table model over the vertical model but also suggest some advantages of the vertical model.

2. Which elements are sometimes referred to as the noble metals and why are they called noble metals? Is there any relationship of this terminology to the use of these metals in jewelry?

3. Of the elements with LD50 values for rodents reported, list the five most toxic. Does there appear to be any periodicity to toxicity? Explain your answer. (Note: a possibly relevant reference is:

4. Which of the native elements occur in nature in uncombined form (not as diatomics or bonded to themselves)? Is there a difference between the definition of an element and an elementary substance? (Note: a possibly relevant reference is Myers, R.J. J. Chem. Educ., 2012, 89, pp. 832-833.

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