His principal contribution to chemistry was the 'vis tellurique' (telluric screw), a three-dimensional arrangement of the elements constituting an early form of the periodic classification, published ...

often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number. Scientists use the periodic ...

The number of subatomic particles in an atom can be calculated from the atom's atomic number and mass number. The periodic table - AQA Mendeleev made an early periodic table. In the modern ...

Since the 1950s, scientists have used radio waves to uncover the molecular "fingerprints" of unknown materials, aiding in ...

The Periodic Table is an amazing chemistry tool that is organized with elements in order of increasing atomic number. The properties of the element change as you move across the row, but are similar ...

The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri ...

The laws of chemistry Mendeleev (1834-1907) created his early periodic table in 1869. He took the 63 known elements and arranged them into a table, mainly by their atomic mass. Although he wasn't ...

In this series, podcast presenters Dr Sunayana Bhargava and Tulela Pea guide you through everything you need to know about atomic structure and the periodic table to ace your GCSE science exam.

Photo: Atomic bomb test explosion in Alamagordo ... artificial element above uranium in the periodic table. It seemed he had done this and in the process showed that slow-moving neutrons were ...