About This Lesson
Electrons are wrapped around the nucleus in shells. It is no coincidence that the first shell can accommodate up to 2 electrons, and that there are 2 elements in the first row of the Periodic Table, and that the second shell can accommodate up to 8 electrons, and that there are 8 elements in the second row of the Periodic Table. This video explains this connection, and the ramifications it has for the properties of elements.
