Lithium has two naturally occurring isotopes,⁶Li and ⁷Li .The average atomic mass of lithium is 6.941.Which of the following statements concerning the relative abundance of each isotope is correct? A)The abundance of ⁷Li is greater than ⁶Li. B)The abundance of ⁷Li is less than ⁶Li. C)The abundance of ⁶Li is equal to the abundance of ⁷Li. D)Not enough data is provided to determine the correct answer. E)Based on the atomic mass,only ⁷Li occurs naturally.

Question

Quizplus · Accepted Answer

The relative abundance of each isotope cannot be determined solely based on the average atomic mass. However, since ⁷Li has a higher atomic mass than ⁶Li, it is likely that it is less abundant since it contributes more to the overall average. Therefore, statement A is the most likely correct answer.

Lithium Has Two Naturally Occurring Isotopes,6Li and 7Li

Lithium Has Two Naturally Occurring Isotopes,⁶Li and ⁷Li