Isotopes - Page 4
Questions
- Why is the average atomic mass for an element typically not a whole number?
- The atomic mass of fictitious element X is 51.70 amu. If element X consists of two isotopes that have mass numbers of 50 and 52, what is the approximate % natural abundance of each isotope?
- What is the difference between the two isotopes of Li (Lithium)?
- When atoms of the same element have different mass numbers, what are they known as?
- How does the number of nuclear particles relate to the identity of the atom, and the identity of the isotope?
- Strontium consists of four isotopes with masses of 84 (abundance 0.50%), 86 (abundance of 9.9%), 87 (abundance of 7.0%), and 88 (abundance of 82.6%). What is the atomic mass of strontium?
- What isotope has 18 protons and 22 neutrons?
- Calcium has three different isotopes. One has a mass of 35.00 amu; another has a mass of 41.00 amu; and another has a mass of 40.00 amu. Which isotope is the most abundant of the three?
- What is the difference between an isotope and a radioisotope?
- Isotopes are atoms of the same element with the same number of protons and a different number of what?
- Vanadium has two naturally occurring isotopes, 50-V with an atomic mass of 49.9472 amu and 51-V with an atomic mass of 50.9440. The atomic weight of vanadium is 50.9415. What is the percent abundance of the vanadium isotopes?
- What are the units for isotopic abundance?
- What is the average atomic mass of titanium if we have an isotopic distribution of #78.5%# of #""^46Ti#, #45.95263*"amu"#, #12.3%# of #""^48Ti#, #47.94795*"amu"#, and #""^50Ti#, #49.94479*"amu"#?
- Explain why atoms have different isotopes. In other words, how is it that helium can exist in three different forms?
- How many protons and neutrons are in uranium-235?
- Do all isotopes of an element have the same atomic number?
- What is the number of protons in an atom of carbon-12?
- What is the importance of carbon-14?
- Two atoms have the same number of protons but different numbers of neutrons. What can you conclude about these two atoms?
- What does #"X"# represent in the following symbol: #""_35^80"X"# ?