Average Atomic Mass for Period 4
Potassium
- 39.10
Calcium
- 40.08
Scandium
- 44.96
Titanium
- 44.96
Vanadium
- 50.94
Chromium
- 52
Manganese
- 54.93
Iron
- 55.85
Cobalt
- 58.93
Nickel
- 58.69
Copper
- 63.55
Zinc
- 65.41
Gallium
- 69.72
Germanium
- 72.64
Arsenic
- 74.92
Selenium
- 78.96
Bromine
- 79.90
Krypton
- 83.30