Chemical Name: Lithium-6 (Li-6)
Chemical Symbol: ?Li
Atomic Number: 3
Atomic Mass: 6.015122 atomic mass units (amu)

Description:
Lithium-6 is a stable isotope of lithium, making up approximately 7.5% of naturally occurring lithium. It is a lightweight, silvery-white alkali metal that is highly reactive, especially with water. Lithium-6 is of significant interest due to its unique nuclear properties and applications in science and industry.

Uses:

1. Nuclear Industry: Lithium-6 is a key material in the production of tritium (3H), a radioactive isotope used in thermonuclear weapons and fusion reactors. It undergoes nuclear reactions with neutrons to produce tritium.

2. Energy Storage: Lithium-6 is used in advanced lithium-ion batteries, particularly in research and development for high-performance energy storage systems.

3. Scientific Research: It is used in neutron detection and shielding due to its high neutron absorption cross-section.

4. Medical Applications: Lithium-6 is studied for its potential use in neutron capture therapy for cancer treatment.

Properties:

• Density: 0.534 g/cm3 (at room temperature)

• Melting Point: 180.5 °C (356.9 °F)

• Boiling Point: 1342 °C (2448 °F)

• Reactivity: Highly reactive with water, producing hydrogen gas and heat.

Safety Information:
Lithium-6 is highly reactive and must be handled with care. It can react violently with water, releasing flammable hydrogen gas. Proper storage in an inert atmosphere (e.g., argon or mineral oil) is essential to prevent oxidation or reactions. Protective equipment, such as gloves and safety goggles, should be worn when handling lithium-6.