Period 7 element

The seventh period of the periodic table of the elements contains all the chemical elements that have exactly seven electron shells in the atom. The innermost (first) electron shell is fully occupied and has two electrons. The second electron shell with eight electrons, the third electron shell with 18 electrons and the fourth electron shell with 32 electrons are also fully occupied. The fifth electron shell has at least 18 electrons and can accommodate a maximum of 32 electrons. The sixth electron shell has at least 8 electrons and can hold up to 18 electrons. The outermost ( seventh ) electron shell, also called valence shell, can accommodate between one and eight electrons. Thus, a total of 32 chemical elements are in the seventh period. The actinides represent a special group because within this period.

Excerpt from the Periodic Table

Number of electrons in the electron shells

List