What is Atomic Number? | ChemTalk
In this article, you will learn about atomic number, its definition, its usefulness in categorizing elements, and its history as a theory in chemistry.| ChemTalk
In this article, you will learn about atomic number, its definition, its usefulness in categorizing elements, and its history as a theory in chemistry.| ChemTalk
Learn the properties of the noble gases, group 18 on the periodic table, along with fun facts, their chemistry and why the noble gases are unreactive.| ChemTalk
Helium element-in the periodic table: properties, facts, history, chemistry, discovery, and why helium, a noble gas, is an element in crisis.| ChemTalk
Learn the properties of the halogens, group 17 on the periodic table, along with fun facts, their chemistry and why the halogens are reactive.| ChemTalk
Learn the properties of the alkali metals, the group 1 elements on the periodic table, along with fun facts, chemistry and why they are reactive.| ChemTalk
An atom is a building block of matter that is generally used to determine the characteristics of an element.| ChemTalk
We explain periodic trends of the periodic table, such as electronegavity, atomic radius, first ionization energy, & electron affinity.| ChemTalk
What is ionization energy? Learn the definition, trend on the periodic table, first & second ionization energies, see a chart and much more.| ChemTalk
How to write electron configurations & orbital diagrams for elements, with Hund's rule, Aufbau's principle & the Pauli Exclusion Principle| ChemTalk
Learn the definition of atomic radius (atomic size), the atomic radius trend on the periodic table, and why this periodic trend occurs| ChemTalk
The world's best periodic table! Enjoy this elegant, beautiful interactive table of the elements, with links to complete element articles.| ChemTalk
