{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# q1bsol - Let’s check to see if the alleged isotopic...

This preview shows page 1. Sign up to view the full content.

3.091 Fall Term 2004 Homework Quiz #1B Solution outline (a) Magnesium has three isotopes, 24 Mg, 25 Mg, and 26 Mg. For the cation, Mg 2+ , of the heaviest isotope, 26 Mg, specify the following: number of protons, n p = 12 number of electrons, n e = 10 number of neutrons, n n = 14 (b) An internet website is quoting the following values for the natural abundance of each isotope: 24 Mg 79% 25 Mg 10% 26 Mg 11% Does this distribution appear to be accurate? Explain with the aid of a simple calculation.
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Let’s check to see if the alleged isotopic distribution is consistent with the value of the atomic mass of Mg as given in your periodic table. (24 × 0.79) + (25 × 0.10) + (26 × 0.11) = 24.32 Your PT gives a value of 24.3050. Conclusion: the values posted at the internet website appear to be accurate....
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern