Question

What is the atomic weight of Lithium ?
1. 6.941 amu, g/mol
2. 9.012 amu, g/mol
3. 4.003 amu, g/mol
4. 10.811 amu, g/mol

Answer 1

Correct Answer - Option 1 : 6.941 amu, g/mol

The Correct Answer is "6.941 amu, g/mol".

• The atomic weight of terrestrial and commercial lithium sources varies between 6.9387 and 6.9959
•  It has the atomic symbol Li, atomic number 3.

 

• The total weight of an atom is called the atomic weight.
• It is approximately equal to the number of protons and neutrons, with a little extra added by the electrons.
• The standard unit of atomic mass has been one-twelfth the mass of an atom of the isotope carbon-12.
• An isotope is one of two or more species of atoms of the same chemical element that have different atomic mass numbers (protons + neutrons).
• The atomic weight of helium is 4.002602, the average that reflects the typical ratio of natural abundances of its isotopes.
• Atomic weight is measured in atomic mass units (AMU), also called daltons.

 

• Lithium compounds, also known as lithium salts, are primarily used as psychiatric medication.
• It appears to be safe to use while breastfeeding.
• Lithium salts are classified as mood stabilizers.
• Lithium is used primarily for bipolar disorder.
• In the nineteenth century, lithium was used in people who had gout, epilepsy, and cancer.
• Its use in the treatment of mental disorders began in 1948 by John Cade in Australia.
• It is on the World Health Organization's List of Essential Medicines.