| Scandium | Sc | 21 | Transition metal | Scandia, the Latin name for Scandinavia | 3 | 4 | 44.96 | 0.00 | 2.99 | 1814.00 | 3109.00 | 0.57 | 1.36 | 22.00 | 
          
                | Strontium | Sr | 38 | Alkaline earth metal | Strontian, a small town in Scotland | 2 | 5 | 87.62 | 0.01 | 2.64 | 1050.00 | 1655.00 | 0.30 | 0.95 | 370.00 | 
          
                | Tennessine | Ts | 117 | Unknown chemical properties | Tennessee, United States | 17 | 7 |  |  | -7.20 | -723.00 | -883.00 |  |  | 0.00 | 
          
                | Americium | Am | 95 | Actinide | The Americas, as the element was first synthesized on the continent, by analogy with europium |  | 7 |  |  | 13.69 | 1449.00 | 2880.00 |  | 1.13 | 0.00 | 
          
                | Sodium | Na | 11 | Alkali metal | the English word soda (natrium in Latin) | 1 | 3 | 22.99 | 0.00 | 0.97 | 370.87 | 1156.00 | 1.23 | 0.93 | 23600.00 | 
          
                | Cobalt | Co | 27 | Transition metal | the German word Kobold, 'goblin' | 9 | 4 | 58.93 | 0.00 | 8.86 | 1768.00 | 3200.00 | 0.42 | 1.88 | 25.00 | 
          
                | Actinium | Ac | 89 | Actinide | the Greek aktis, 'ray' | 3 | 7 |  |  | 10.07 | 1323.00 | 3471.00 | 0.12 | 1.10 | 0.00 | 
          
                | Argon | Ar | 18 | Noble gas | the Greek argos, 'idle' | 18 | 3 | 39.95 | 0.00 | 0.00 | 83.80 | 87.30 | 0.52 |  | 3.50 | 
          
                | Astatine | At | 85 | Metalloid | the Greek astatos, 'unstable' | 17 | 6 |  |  | 7.00 | 575.00 | 610.00 |  | 2.20 | 0.00 | 
          
                | Barium | Ba | 56 | Alkaline earth metal | the Greek barys, 'heavy' | 2 | 6 | 137.33 | 0.01 | 3.59 | 1000.00 | 2170.00 | 0.20 | 0.89 | 425.00 |