Beryllium Be

Atomic Number: 4
Atomic Mass: 9.012
Half-life: 53.3 days to 2,600,00 years

Source:

• Coal combustion, cigarette smoke, beryllium extraction plants, ceramics plants, beryllium alloy manufacturing
• Oral ingestion okay, inhalation results in longer retention

Adverse Effects:

• Deposits in liver and bones
• Acute: Acute chemical pneumonitis
• Chronic: Lung granulomas (chronic beryllium disease or berylliosis), lung cancer