Nickel Ni Atomic Number: 28 Atomic Mass: 58.693 Half Life: 2.51 hrs-76000yrs ______________________________________________________________________________ Sources: - Food (chocolate, soybean, nuts, oatmeal) - Coal combustion - Nickel mining - Jewellery Adverse Effects: - Allergic reaction - Chronic bronchitis, reduced lung function - Lung and nasal/sinus cancer