| Group | ||||
|---|---|---|---|---|
| 6 | 7 | 8 | ||
| Period | 4 |
24
Cr
Chromium
[Ar] 4s1 3d5
|
25
Mn
Manganese
[Ar] 4s2 3d5
Name origin:
Either the Latin 'magnes', meaning magnet or from the black magnesium oxide, 'magnesia nigra'
Atomic weight (amu):
54.938045
Specific heat capacity (J/gK):
0.479
Density (g/cm3):
7.44
Melting point (K):
1519.0
Boiling point (K):
2334.0
Electronegativity (Pauling):
1.55
Abundance (mg/kg):
950.0
|
26
Fe
Iron
[Ar] 4s2 3d6
|
| 5 |
43
Tc
Technetium
[Kr] 5s2 4d5
|
|||
Tip: Hover over an adjacent element to compare its electron configuration to that of the central element.