For the last fifty or so years, the periodic table has been incomplete. Elements after uranium on the periodic table have been synthesized for the past few decades, but there were always a few ...

The periodic table has 118 elements in total, and it seems to be expanding constantly. Just last year, they added elements 113, 115, 117, and 118: nihonium (Nh), moscovium (Mc), tennessine (Ts ...

Join us as we celebrate throughout the year by showing how chemical elements are central to "linking cultural ... whilst also celebrating the genesis and development of the periodic table over the ...

The main groups are numbered from 1 to 7 going from left to right, and the last ... elements in group 0 are unreactive non-metals. The zigzag, staircase, line in the diagram of the periodic table ...

The Periodic Table of Elements. Each entry contains the atomic number, chemical symbol, and atomic mass to two decimal places on elements where data is available. Undefined cells contain a space. Row ...

1. Periodic Table as Arranged by Mendelejeff attention to the fact that “the eighth element, starting from a given one, is a kind of repetition of the first, like the eighth note of an octave in ...