Post Tagged with: "Periodic Table"

CLT 51: Table of Condiments that Periodically Go Bad

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This page says this originally appeared in a mock calendar diary for 1997. I don’t know the original source.

Enjoy!

By October 9, 2012 3 comments fun

My Attempt At a Periodic Table

Inspired by azmanam’s recent post, Alternative Periodic Tables, I’ve decided to make my own periodic table. I freely admit I didn’t improve much on the old Mendeleev design. The only unique difference with this table is the color coding for the valence electrons

periodic-table4

The Basics
s-blocks are blue, d-blocks are green, p-blocks are shades of purple-pink, f-blocks are red. Black are for the elements that have never been studied chemically.

The Exceptions
The d-metals that are missing an s-electron in their octet are teal (green + blue). The f-metals that have an extra d-electron are brown (green + red). The super brights Palladium and Thorium gained or lost two electrons not in their native octet.

It was always difficult for me to remember where in the periodic table the electron configurations do not conform to what I would naively assume. I would hope this type of periodic table keeps it more in the mind of students.

Mitch

By May 3, 2009 14 comments general chemistry

Alternative Periodic Tables (Updated. Now with a Final Thought!)

There’s an article in the current issue of Nature Chemistry that discusses some alternative ways of depicting the periodicity of the elements. There’s the IUPAC recognized Mendeleevian periodic table that everyone knows. There’s probably 3 in eyesight of you right now, isn’t there?
mendeleev(click for larger)

d

d

d

But how many alternative periodic tables can you think of.  Hint: there’s A LOT.  More below the jump.

Read more ›

By April 26, 2009 98 comments general chemistry