Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications.

Summary Students will begin to look closely at the periodic table. They will be introduced to the basic information given for the elements in most periodic tables: the name, symbol, atomic number, and ...

First 20 elements of the periodic table: This article provides a comprehensive list of the first 20 elements in the periodic table along with their atomic numbers and symbols.

Pekka Pyykkö proposes a periodic table that goes all the way up to atomic number 172 and is based on electronic configurations, which he calculated by taking relativistic effects into account.

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

The periodic table is just a list of elements: 1, 2, 3, 4, 5…. The number of the element was called the “atomic number” and once upon a time, it was just a number.

The table starts with the simplest atom, hydrogen, and then organizes the rest of the elements by atomic number, which is the number of protons each contains.

A new version of the periodic table arranges elements by protons instead of electrons. Because the old one was getting pretty stale.

We learn the periodic table as the elements arranged according to the atomic number, which is an integer, a whole number. That's the number of protons in an atom of that element.

University of Nottingham’s chemistry professor Martyn Poliakoff says that most chemists don’t know the atomic number of most elements and that it’s a pain to look in the periodic table. That ...

A little-known genius figured out where all the elements in the periodic table should be placed long before some of them were discovered.

150 years ago, Russian chemist Dmitrii Mendeleev created the periodic table of the elements, revolutionizing chemistry.