Astatine is not a metalloid but a nonmetal; astatine is a solid because is more heavier than fluorine.
Periodic trends affect bonding due to the arrangement of the elements on the periodic table. The periodic table only includes chemical elements.
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Periodic patterns and trends
Periodic trends illustrate how some elements are very reactive while others are stable.
in 1869 periodic trends in the properties of the then-known elements
The periodic trends that arise from the arrangement of the periodic table provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or period and the periodic nature of the elements.
For periodic trends we will examine1- Electronic configuration 2- Ionization energy 3- Atomic radius
Atomic Mass Octaves and Triads
atomic mass, triads, and octaves
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The rows are used to study the change in trends. There are 7 periods in periodic table.
Reactivity increases the farther down you go in the Periodic Table.