BBC
Bbc: Gcse Bitesize: The Periodic Table
This lesson focuses on the periodic table and the configurations. In the modern periodic table, elements are in order of atomic number in periods and groups. Electronic configurations model how electrons are arranged in atoms. A link to...
BBC
Bbc: Gcse Bitesize: The Periodic Table
Elements in the same group in the periodic table have similar chemical properties. This is because their atoms have the same number of electrons in the highest occupied energy level. Group 1 elements are reactive metals called the alkali...