Strontium Scandium Selenium Samarium
Radium Radon Uranium Rhenium
Tin Argon Silver Gold
Scandium Silver Silicon Sodium
Ruthenium Rubidium Rhodium Radium
Sulphur Selenium Samarium Silver
Strontium Sulphur Scandium Silicon
Rubidium Rhenum Rhodium Ruthenium
Sulphur Silver Selenium Silicon
Nickel Sodium Silver Neptunium