"Molymod Inorganic/Organic Student Set
Includes
Spheres: 2 metal (1 hole), 2 metal (Ca, Mg) (2 hole), 1 metal (Be) (2 hole), 1 metal (3 hole), 1 metal (4 hole), 1 metal (6 hole), 6 halogen (1 hole), 1 oxygen (4 hole), 6 oxygen (2 hole), 1 boron (3 hole), 1 sulphur (2 hole), 1 nitr...