| Group | ||||
|---|---|---|---|---|
| 16 | 17 | 18 | ||
| 3 |
17
Cl
Chlorine
[Ne] 3s2 3p5
|
|||
| Period | 4 |
34
Se
Selenium
[Ar] 4s2 3d10 4p4
|
35
Br
Bromine
[Ar] 4s2 3d10 4p5
Name origin:
the Greek 'bromos' meaning stench
Atomic weight (amu):
79.9049
Specific heat capacity (J/gK):
0.474
Density (g/cm3):
3.122
Melting point (K):
265.8
Boiling point (K):
332.0
Electronegativity (Pauling):
2.96
Abundance (mg/kg):
2.4
|
36
Kr
Krypton
[Ar] 4s2 3d10 4p6
|
| 5 |
53
I
Iodine
[Kr] 5s2 4d10 5p5
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.