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

Some of the other Murov sites: 
Chemistry Directory:
Organic Chemistry Directory:
Organic Solvent Properties and Property Directory:  
Properties of Organic Compounds:


Image result for mendeleev periodic table  
A.  Periodic Tables by Murov
B.  Websites Related to the Periodic Table by Murov
C.  Directories of Periodic Tables
D.  Periodic Tables with Properties, Graphing and/or Ranking Capability
E.  Periodic Tables with Properties
F.  Interactive or Animated Periodic Tables
G.  Periodic Table Trends
H.  Images of the Elements
J.  Mendeleev and the History of the Periodic Table
K.  Emission Spectra and Electron Structure of the Elements
L.  Isotopes
M.  Chemogenesis (chemical reactivity from the periodic table)
N.  Compilation of Elemental Properties
O.  Toxicities of the Elements
P.  Sources, Uses, Functions and Mineralogy of Elements
Q.  Native Elements
R.  Extended Periodic Table
S.  Periodic Table Printmaking Projects
T.  Periodic Table of Comic Books, emojis and Haiku, books, Disney characters
U.  The Element Song
V.  Periodic Table Templates
W.  Periodic Table Videos
X  Origin of the Names of the Elements
Y.  Prices of the Elements
Z.  Questions about the Periodic Table
     Dimitri Mendeleev       

A.  Periodic Tables by Murov

Periodic table with Element Colors
Aufbau Periodic Table
Native (elemental form) 
Toxicity of the elements 
Date and Country of Discovery 
Formulas of Cmpds. with H and Cl 
Colored and color coded periodic tables with information on ions, metals vs non-metal.  

B.  Websites Related to Periodic Table by Murov    PowerPoint presentation for use during talk on the development of the periodic table 

C. Directories of Periodic Tables

D. Periodic Tables with Properties, Graphing and/or Ranking Capability

WebElements -
T. Gray -

E. Properties (Periodic Tables containing) (new website that requires free registration especially for m.p. and b.p. values of the elements)

electron configurations - 
x-ray - 

F. Interactive and/or Animated Periodic Tables

G. Periodic Table Trends  

H. Images of Elements

I. About the Periodic Table

J. Mendeleev and the History of the Periodic Table

K. Emission Spectra of Elements and Electron Structure 

L. Isotopes 

M. Chemogenesis (chemical reactivity from the periodic table) 

N. Compilation of Elemental Properties and Abundances

O. Toxicities of Elements

P.  Sources, Uses, Functions and Mineralogy of Elements 

Q. Native Elements 

R. Extended Periodic Table

S. Periodic Table Printmaking Projects  

T. Periodic Table of Comic Books, emojis and Haiku, books, Disney characters

U. The Element Song by Tom Lehrer

V.  Periodic Table Templates

W. Periodic Table Videos

X.  Origin of the Names of the Elements
Peter Wothers, How the Elements are Named: 
            Antimony, Gold, Jupiter's Wolf, see

Y.  Prices of the Elements  periodic table with element prices’s-precious-metals

Z.  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.


Some periodic table questions and unresolved issues.

1.  There are at least four commonly used versions of the periodic table:  the long, the medium-long, the left step and the pyramidal.  While some experts have preferences for one or another, each has strengths and weaknesses.  Which one do you prefer and why?

medium-long and long (not up-to-date with names) (medium long and long but not up-to-date with names)

long form

medium-long form

left step

pyramidal version (not up-to-date with names)

2.  The positions of some elements in periodic tables are still disputed. 
a.  Does hydrogen belong in the alkali metals group or the halogen group or neither?

b.  There are some claims that second period elements have properties inconsistent with the remaining members of their groups.  Explain this statement.

c.  Some medium-long periodic tables have lanthanum part of the “f” group of elements (split out from the periodic table), others have lutetium as a member of the 14 elements and still others include 15 elements in the “f” group .  What is the best placement of these two elements?  Part of the issue is the priority of chemical properties versus electronic structure.  If electronic structure is taken as the determining criteria, are there other elements that are misplaced in the periodic table?
d.  Does helium belong in Group 18 or Group 2?

3.  The IUPC numbers the groups from 1 through 18 but American periodic tables often have A and B group elements with the numbers running from 1A through 8A and 1B through 8B.  State the advantages and disadvantages of each and your preference (for a table with both, see tables above or

4.  Is the periodic table universal or could there be differences on another planet?  For example, consider the universality of atomic masses.

5.  Does the periodic table contain any isotope information?  Consider use of the atomic mass as a source of isotope information (See:  S. Murov, Chem 13 News, March, 2010.  “Promoting Insight:  Atomic Mass”.

6.  The periodic tables above attempt to illustrate the approximate colors of the elements.  The orange staircase in the two periodic tables is commonly included in many periodic tables to very qualitatively separate the metals and the non-metals.  Do the colors of the elements also help to distinguish metals from non-metals and, if so, does this method correlate with the staircase model?  Which method do you think has more merit?  (Note:  It is often suggested that the elements adjacent to the staircase are metalloids, semiconductors and/or semimetals.  The consensus is that boron, silicon, germanium, arsenic, antimony and tellurium are metalloids with a few others in the questionable category.  For a discussion of criteria used to characaterize metalloid properties, please see:

7.  Calculations indicate that stability of nuclei depend on the neutron to proton ratio and predict an island of stability above atomic number 110.  Is it possible that there are some "longer lived isotopes" with atomic number above 110?  (e.g., see: )

8.  What is the probability that elements with atomic number greater than 118 will ever be synthesized?
    (e.g., see: )

9.  In some cases, discoveries have been made virtually simultaneously by different people in different countries (e.g., 1772, 1963).  Is this just a coincidence or are other factors in play here?  


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