←He   Li↑   ↓Na   Be→

Lithium ∙ lithium ∙ litio ∙ litio
group I: R₂O

• melting point: 180.54°C
• boiling point: 1342°C
• density: 0.53 g/cm³

Lithium is used in the treatment of bipolar disorder. — Wikipedia

minerals:
Spodumene LiAl(SiO₃)₂ – a clinopyroxene

Lithium-7 has important uses in nuclear power tdue to its relative transparency to neutrons. — world-nuclear

Environmental levels might increas (and average mood be improved) as a consequence of more intense lithium mining in the future.