The Average Atomic Mass of Lithium Is 6

question 10

Multiple Choice

The average atomic mass of lithium is 6.941 amu. Lithium has two naturally occurring isotopes, ⁶Li (7.52%) and ⁷Li (92.48%) . The mass of ⁶Li is 6.0151 amu. What is the mass of ⁷Li?

• A) 7.016 amu
• B) 0.926 amu
• C) 6.001 amu
• D) 7.000 amu
• E) 6.941 amu

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Definitions:

Syncope

A temporary loss of consciousness usually related to insufficient blood flow to the brain, commonly known as fainting.

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A sensation of unsteadiness, lightheadedness, or feeling as though one's surroundings are spinning.

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Groups of neurons located deep in the brain, involved in controlling movement and coordination.