CHALCOGENS
Physical Properties
| Electron Configuration |
Atomic Radius (pm) |
Ionic Radius (pm) |
First Ionization Energy (kJ/mol) |
Electro- negativity |
Melting Point ( oC) |
|
| O | 1s22s22p4 | 74 | 140 |
1312 | 3.4 | -218.4 |
| S | 1s22s22p63s23p4 | 104 | 184 | 1004 | 2.6 | 119 |
| Se | 1s22s22p63s23p64s23d104p4 | 117 | 198 | 946 | 2.6 | 217 |
| Te | 1s22s22p63s23p64s23d104p65s24d105p4 | 137 | 221 | 870 | 2.1 | 452 |