The "chemistry" happens when elements interact to form compounds. This occurs through three primary types of bonds:
Each element is defined by its , which is the number of protons in its nucleus. This fundamental value determines the element's identity and its position in the periodic table. The chemistry of an element is primarily driven by its valence electrons —the electrons in the outermost shell—which dictate how it bonds with other atoms. Major Groups and Trends
: These elements sit along the "staircase" line and have properties of both metals and nonmetals, making them essential for semiconductor technology.
: The size of an atom generally increases as you move down a group and decreases as you move left to right across a period.
: The tendency of an atom to attract electrons increases as you move toward the top right (excluding noble gases).
The chemistry of the elements is the study of the 118 identified chemical substances that make up all matter in the universe. These elements are organized in the Periodic Table based on their atomic number, electron configurations, and recurring chemical properties. Licensed by Google The Architecture of Elements