Chlorine (atomic number 17) is composed of two principal isotopes, chlorine-35,

Question

Chlorine (atomic number 17) is composed of two principal isotopes, chlorine-35, which has a mass of 34.9689 atomic mass units, and chlorine-37, which has a mass of 36.9659 atomic mass units. Assume that 75.77 percent of all chlorine atoms are the chlorine-35 isotope and 24.23 percent are the chlorine-37 isotope. Show that the atomic mass of natural chlorine is 35.45. Lithium (atomic number 3) is composed of two principle isotopes. the isotope lithium-7 has a mass of 7.0160 atomic mass units, and the isotope lithium-6 has a mass of 6.0151 atomic mass units.

Explanation / Answer

atomic mass= percent of isotope1*atomic mass of isotope1 +percent of isotope2*atomic mass of isotope2 +.....

1)   atomic mass= (75.77*34.9689 + 24.23*36.9659)/100 =35.45

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.