PT Clock Face 2016
On 28 November 2016, the International Union of Pure and Applied Chemistry (IUPAC) approved the name and symbols for four elements: nihonium (Nh), moscovium (Mc), tennessine (Ts), and oganesson (Og), respectively for element 113, 115, 117, and 118.
Background color shows subcategory in the metal–metalloid–nonmetal trend:
Metal: Alkali metal, Alkaline earth metal, Lanthanide, Actinide, Transition metal, Post-transition metal, Metalloid, Nonmetal: Polyatomic nonmetal, Diatomic nonmetal, Noble gas and Unknown chemical properties.
Periodic Table Clock 2014
This clock has 118 atomic symbols –- H to Uuo –- on its dial in a double circle. Near the center of the clock is a spiral line along which are written numbers that represent the electron configuration of each atom written on the outer circles. ( Add 10, 20 or 30 to the number according to the color index. ) This clock was given as the prize to the winner of the finger-match games held in the chemistry room on April 27, 2014, when our School Festival was held under the theme “FUNKOTSUSAISHIN or Do Your Best.”
Poliakoff M, Tang S. 2015 The periodic table: icon and inspiration. Phil. Trans. R. Soc. A 373: 20140211.
The atomic number clock is a wonderful innovation and is beautifully designed. It capitalizes on the fact that the number 60, that we use on clock faces, coincides with approximately one half of the number of currently known elements, or 120. It has allowed me to finally get to know the atomic numbers of all elements going up in increments of 5. The atomic number clock relies on the fact that we can instantly recognize each of the 5 minute marks on a clock face. Now we can also associate an element with each of these as in B = 5, Ne = 10, P = 15, etc.
Dr. Eric Scerri / author of The Periodic Table, Its Story and Its Significance and other books on elements.