What is the atomic mass of lithium?

Answer: The atomic mass of lithium is approximately 6.94 atomic mass units (u).

Explanation: The atomic mass of an element is the weighted average of the masses of its naturally occurring isotopes, taking into account their relative abundances. Lithium has two stable isotopes: lithium-6 (Li-6) and lithium-7 (Li-7), with approximate atomic masses of 6.015 u and 7.016 u, respectively. The atomic mass of lithium is calculated by considering the abundance of each isotope in nature. Read more…