The electron dot diagrams of oxygen, potassium, iodine, nitrogen, and beryllium is attached as a diagram.
Oxygen has 6 valence electrons, which are represented by 6 dots around the symbol O. Oxygen atoms typically share 2 of their valence electrons with other atoms to form bonds.
Potassium has 1 valence electron, which is represented by 1 dot around the symbol K. Potassium atoms typically lose their 1 valence electron to form bonds with other atoms.
Iodine has 7 valence electrons, which are represented by 7 dots around the symbol I. Iodine atoms typically share 1 or 2 of their valence electrons with other atoms to form bonds. Nitrogen has 5 valence electrons, which are represented by 5 dots around the symbol N. Nitrogen atoms typically share 3 of their valence electrons with other atoms to form bonds.