An electron dot diagram, also known as a Lewis structure, is a simplified representation of the valence electrons in an atom or molecule.
How is it used?
It uses dots around the element symbol to represent the valence electrons.
Since hydrogen has only one electron, the electron dot diagram for Te+H would simply show two electrons around the tellurium atom, one from tellurium and the other from hydrogen.
This is the representation:
Te+
H
This indicates that tellurium has lost one electron to form a cation, Te+, and hydrogen has gained one electron to form an anion, H-. The electrostatic attraction between the oppositely charged ions forms a chemical bond.